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53135932038 = 23719137348497
BaseRepresentation
bin110001011111001001…
…011111101010000110
312002011010122000122220
4301133021133222012
51332310244311123
640224343233210
73560520653520
oct613711375206
9162133560586
1053135932038
1120597937222
12a36b148806
13501a668b07
142800ddca10
1515aed39ce3
hexc5f25fa86

53135932038 has 64 divisors (see below), whose sum is σ = 127941603840. Its totient is φ = 14371886592.

The previous prime is 53135932009. The next prime is 53135932061. The reversal of 53135932038 is 83023953135.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071406 + ... + 1119902.

It is an arithmetic number, because the mean of its divisors is an integer number (1999087560).

Almost surely, 253135932038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53135932038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63970801920).

53135932038 is an abundant number, since it is smaller than the sum of its proper divisors (74805671802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53135932038 is a wasteful number, since it uses less digits than its factorization.

53135932038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49901.

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 53135932038 in words is "fifty-three billion, one hundred thirty-five million, nine hundred thirty-two thousand, thirty-eight".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 266 399 798 1373 2746 4119 8238 9611 19222 26087 28833 48497 52174 57666 78261 96994 145491 156522 182609 290982 339479 365218 547827 678958 921443 1018437 1095654 1842886 2036874 2764329 5528658 6450101 12900202 19350303 38700606 66586381 133172762 199759143 399518286 466104667 932209334 1265141239 1398314001 2530282478 2796628002 3795423717 7590847434 8855988673 17711977346 26567966019 53135932038