764125715556 has 192 divisors, whose sum is σ = 2433947443200. Its totient is φ = 202430181888.

The previous prime is 764125715539. The next prime is 764125715569. The reversal of 764125715556 is 655517521467.

764125715556 is a `hidden beast` number, since 7 + 6 + 4 + 12 + 5 + 71 + 5 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109180 + ... + 1241036.

It is an arithmetic number, because the mean of its divisors is an integer number (12676809600).

Almost surely, 2^764125715556 is an apocalyptic number.

764125715556 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 764125715556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216973721600).

764125715556 is an abundant number, since it is smaller than the sum of its proper divisors (1669821727644).

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

764125715556 is a wasteful number, since it uses less digits than its factorization.

764125715556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131943 (or 1131935 counting only the distinct ones).

The product of its digits is 8820000, while the sum is 54.

The spelling of 764125715556 in words is "seven hundred sixty-four billion, one hundred twenty-five million, seven hundred fifteen thousand, five hundred fifty-six".