955881646864 has 15 divisors (see below), whose sum is σ = 1852028267943. Its totient is φ = 477938868048.

The previous prime is 955881646849. The next prime is 955881646883. The reversal of 955881646864 is 468646188559.

It is a happy number.

The square root of 955881646864 is 977692.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×955881646864² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 955881646793 and 955881646802.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3788557 + ... + 4032979.

Almost surely, 2^955881646864 is an apocalyptic number.

955881646864 is the 977692-nd square number.

It is an amenable number.

955881646864 is a deficient number, since it is larger than the sum of its proper divisors (896146621079).

955881646864 is an frugal number, since it uses more digits than its factorization.

955881646864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488854 (or 244425 counting only the distinct ones).

The product of its digits is 398131200, while the sum is 70.

The spelling of 955881646864 in words is "nine hundred fifty-five billion, eight hundred eighty-one million, six hundred forty-six thousand, eight hundred sixty-four".