779625626570561 has 4 divisors (see below), whose sum is σ = 781401539160000. Its totient is φ = 777849713981124.

The previous prime is 779625626570551. The next prime is 779625626570569. The reversal of 779625626570561 is 165075626526977.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-779625626570561 is a prime.

It is a super-2 number, since 2×779625626570561² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (779625626570569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887956294061 + ... + 887956294938.

It is an arithmetic number, because the mean of its divisors is an integer number (195350384790000).

Almost surely, 2^{779625626570561} is an apocalyptic number.

It is an amenable number.

779625626570561 is a deficient number, since it is larger than the sum of its proper divisors (1775912589439).

779625626570561 is a wasteful number, since it uses less digits than its factorization.

779625626570561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775912589438.

The product of its (nonzero) digits is 2000376000, while the sum is 74.

The spelling of 779625626570561 in words is "seven hundred seventy-nine trillion, six hundred twenty-five billion, six hundred twenty-six million, five hundred seventy thousand, five hundred sixty-one".