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53781372942 = 23111375947951
BaseRepresentation
bin110010000101100111…
…101010000000001110
312010211010010211010120
4302011213222000032
51340121012413232
640412401245410
73612516061443
oct620547520016
9163733124116
1053781372942
1120899201560
12a50b333866
1350c12b48cb
142862a139ca
1515eb83192c
hexc859ea00e

53781372942 has 32 divisors (see below), whose sum is σ = 118197702144. Its totient is φ = 16178424000.

The previous prime is 53781372913. The next prime is 53781372943. The reversal of 53781372942 is 24927318735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53781372943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2964934 + ... + 2983017.

It is an arithmetic number, because the mean of its divisors is an integer number (3693678192).

Almost surely, 253781372942 is an apocalyptic number.

53781372942 is an abundant number, since it is smaller than the sum of its proper divisors (64416329202).

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

53781372942 is a wasteful number, since it uses less digits than its factorization.

53781372942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5948104.

The product of its digits is 2540160, while the sum is 51.

The spelling of 53781372942 in words is "fifty-three billion, seven hundred eighty-one million, three hundred seventy-two thousand, nine hundred forty-two".

Divisors: 1 2 3 6 11 22 33 66 137 274 411 822 1507 3014 4521 9042 5947951 11895902 17843853 35687706 65427461 130854922 196282383 392564766 814869287 1629738574 2444607861 4889215722 8963562157 17927124314 26890686471 53781372942