7577991766872 has 48 divisors (see below), whose sum is σ = 21283865770440. Its totient is φ = 2525997254976.

The previous prime is 7577991766867. The next prime is 7577991766913. The reversal of 7577991766872 is 2786671997757.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 7577991766791 and 7577991766800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1949070013 + ... + 1949073900.

Almost surely, 2^{7577991766872} is an apocalyptic number.

7577991766872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7577991766872 is an abundant number, since it is smaller than the sum of its proper divisors (13705874003568).

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

7577991766872 is a wasteful number, since it uses less digits than its factorization.

7577991766872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898143934 (or 3898143918 counting only the distinct ones).

The product of its digits is 3920736960, while the sum is 81.

The spelling of 7577991766872 in words is "seven trillion, five hundred seventy-seven billion, nine hundred ninety-one million, seven hundred sixty-six thousand, eight hundred seventy-two".