52690845778956 has 864 divisors, whose sum is σ = 178440119230464. Its totient is φ = 13440812112000.

The previous prime is 52690845778943. The next prime is 52690845778973. The reversal of 52690845778956 is 65987754809625.

52690845778956 is a `hidden beast` number, since 5 + 2 + 6 + 9 + 0 + 8 + 457 + 78 + 95 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 10080511215 + ... + 10080516441.

It is an arithmetic number, because the mean of its divisors is an integer number (206527915776).

Almost surely, 2^{52690845778956} 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 52690845778956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89220059615232).

52690845778956 is an abundant number, since it is smaller than the sum of its proper divisors (125749273451508).

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

52690845778956 is a wasteful number, since it uses less digits than its factorization.

52690845778956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613 (or 5592 counting only the distinct ones).

The product of its (nonzero) digits is 9144576000, while the sum is 81.

The spelling of 52690845778956 in words is "fifty-two trillion, six hundred ninety billion, eight hundred forty-five million, seven hundred seventy-eight thousand, nine hundred fifty-six".