76887923840 has 128 divisors (see below), whose sum is σ = 226228101120. Its totient is φ = 24333742080.

The previous prime is 76887923839. The next prime is 76887923887. The reversal of 76887923840 is 4832978867.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601856 + ... + 718335.

It is an arithmetic number, because the mean of its divisors is an integer number (1767407040).

Almost surely, 2^76887923840 is an apocalyptic number.

76887923840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

76887923840 is an abundant number, since it is smaller than the sum of its proper divisors (149340177280).

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

76887923840 is a wasteful number, since it uses less digits than its factorization.

76887923840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320230 (or 1320218 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 76887923840 in words is "seventy-six billion, eight hundred eighty-seven million, nine hundred twenty-three thousand, eight hundred forty".