76977449472 has 160 divisors (see below), whose sum is σ = 255675492864. Its totient is φ = 19994112000.

The previous prime is 76977449453. The next prime is 76977449491. The reversal of 76977449472 is 27494477967.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76977449453) and next prime (76977449491).

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 207154 + ... + 443697.

Almost surely, 2^76977449472 is an apocalyptic number.

It is an amenable number.

76977449472 is an abundant number, since it is smaller than the sum of its proper divisors (178698043392).

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

76977449472 is a wasteful number, since it uses less digits than its factorization.

76977449472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650890 (or 650874 counting only the distinct ones).

The product of its digits is 149361408, while the sum is 66.

The spelling of 76977449472 in words is "seventy-six billion, nine hundred seventy-seven million, four hundred forty-nine thousand, four hundred seventy-two".