128787356876 has 24 divisors (see below), whose sum is σ = 226344367200. Its totient is φ = 64117872000.

The previous prime is 128787356861. The next prime is 128787356903. The reversal of 128787356876 is 678653787821.

It is a super-2 number, since 2×128787356876² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1531526 + ... + 1613426.

It is an arithmetic number, because the mean of its divisors is an integer number (9431015300).

Almost surely, 2^128787356876 is an apocalyptic number.

It is an amenable number.

128787356876 is a deficient number, since it is larger than the sum of its proper divisors (97557010324).

128787356876 is a wasteful number, since it uses less digits than its factorization.

128787356876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83585 (or 83583 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 68.

The spelling of 128787356876 in words is "one hundred twenty-eight billion, seven hundred eighty-seven million, three hundred fifty-six thousand, eight hundred seventy-six".