76887445856 has 48 divisors (see below), whose sum is σ = 163062205488. Its totient is φ = 35476492800.

The previous prime is 76887445853. The next prime is 76887445879. The reversal of 76887445856 is 65854478867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76887445853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1565351 + ... + 1613721.

It is an arithmetic number, because the mean of its divisors is an integer number (3397129281).

Almost surely, 2^76887445856 is an apocalyptic number.

It is an amenable number.

76887445856 is an abundant number, since it is smaller than the sum of its proper divisors (86174759632).

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

76887445856 is a wasteful number, since it uses less digits than its factorization.

76887445856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52215 (or 52207 counting only the distinct ones).

The product of its digits is 361267200, while the sum is 68.

The spelling of 76887445856 in words is "seventy-six billion, eight hundred eighty-seven million, four hundred forty-five thousand, eight hundred fifty-six".