252561157770656 has 96 divisors (see below), whose sum is σ = 606759667734528. Its totient is φ = 101126611111680.

The previous prime is 252561157770611. The next prime is 252561157770661. The reversal of 252561157770656 is 656077751165252.

It is a happy number.

It is a super-2 number, since 2×252561157770656² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252561157770592 and 252561157770601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569801300 + ... + 570244371.

It is an arithmetic number, because the mean of its divisors is an integer number (6320413205568).

Almost surely, 2^{252561157770656} is an apocalyptic number.

It is an amenable number.

252561157770656 is an abundant number, since it is smaller than the sum of its proper divisors (354198509963872).

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

252561157770656 is a wasteful number, since it uses less digits than its factorization.

252561157770656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140045754 (or 1140045746 counting only the distinct ones).

The product of its (nonzero) digits is 185220000, while the sum is 65.

The spelling of 252561157770656 in words is "two hundred fifty-two trillion, five hundred sixty-one billion, one hundred fifty-seven million, seven hundred seventy thousand, six hundred fifty-six".