305244644336656 has 80 divisors (see below), whose sum is σ = 616414514763520. Its totient is φ = 146312443791360.

The previous prime is 305244644336633. The next prime is 305244644336659. The reversal of 305244644336656 is 656633446442503.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a junction number, because it is equal to n+sod(n) for n = 305244644336594 and 305244644336603.

It is not an unprimeable number, because it can be changed into a prime (305244644336659) 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, 11576680 + ... + 27285688.

It is an arithmetic number, because the mean of its divisors is an integer number (7705181434544).

Almost surely, 2^{305244644336656} is an apocalyptic number.

It is an amenable number.

305244644336656 is an abundant number, since it is smaller than the sum of its proper divisors (311169870426864).

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

305244644336656 is a wasteful number, since it uses less digits than its factorization.

305244644336656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15709584 (or 15709578 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 61.

The spelling of 305244644336656 in words is "three hundred five trillion, two hundred forty-four billion, six hundred forty-four million, three hundred thirty-six thousand, six hundred fifty-six".