765163966556 has 96 divisors (see below), whose sum is σ = 1546175796480. Its totient is φ = 328108838400.

The previous prime is 765163966537. The next prime is 765163966559. The reversal of 765163966556 is 655669361567.

It is a super-2 number, since 2×765163966556² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 765163966492 and 765163966501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (765163966559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9928451 + ... + 10005221.

It is an arithmetic number, because the mean of its divisors is an integer number (16105997880).

Almost surely, 2^765163966556 is an apocalyptic number.

It is an amenable number.

765163966556 is an abundant number, since it is smaller than the sum of its proper divisors (781011829924).

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

765163966556 is a wasteful number, since it uses less digits than its factorization.

765163966556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76995 (or 76993 counting only the distinct ones).

The product of its digits is 183708000, while the sum is 65.

The spelling of 765163966556 in words is "seven hundred sixty-five billion, one hundred sixty-three million, nine hundred sixty-six thousand, five hundred fifty-six".