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53870796731808 = 253271311291158003
BaseRepresentation
bin11000011111110110001011…
…01100111111010110100000
321001201222221110002220000200
430033323011230333112200
524030104342430404213
6310323522524545200
714230015363652160
oct1417730554772640
9231658843086020
1053870796731808
111618a527389a71
1260606309b2200
132409cc0724314
14d435091d65a0
15636482bd5273
hex30fec5b3f5a0

53870796731808 has 288 divisors, whose sum is σ = 176554347121152. Its totient is φ = 15262234790400.

The previous prime is 53870796731753. The next prime is 53870796731821. The reversal of 53870796731808 is 80813769707835.

53870796731808 is a `hidden beast` number, since 5 + 387 + 0 + 7 + 9 + 67 + 3 + 180 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340868935 + ... + 341026937.

It is an arithmetic number, because the mean of its divisors is an integer number (613035927504).

Almost surely, 253870796731808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53870796731808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88277173560576).

53870796731808 is an abundant number, since it is smaller than the sum of its proper divisors (122683550389344).

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

53870796731808 is a wasteful number, since it uses less digits than its factorization.

53870796731808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159448 (or 159437 counting only the distinct ones).

The product of its (nonzero) digits is 426746880, while the sum is 72.

The spelling of 53870796731808 in words is "fifty-three trillion, eight hundred seventy billion, seven hundred ninety-six million, seven hundred thirty-one thousand, eight hundred eight".