77479209676 has 24 divisors (see below), whose sum is σ = 147986040384. Its totient is φ = 35200873680.

The previous prime is 77479209671. The next prime is 77479209677. The reversal of 77479209676 is 67690297477.

It is not an unprimeable number, because it can be changed into a prime (77479209671) 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, 331030 + ... + 514333.

It is an arithmetic number, because the mean of its divisors is an integer number (6166085016).

Almost surely, 2^77479209676 is an apocalyptic number.

It is an amenable number.

77479209676 is a deficient number, since it is larger than the sum of its proper divisors (70506830708).

77479209676 is a wasteful number, since it uses less digits than its factorization.

77479209676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847461 (or 847459 counting only the distinct ones).

The product of its (nonzero) digits is 56010528, while the sum is 64.

The spelling of 77479209676 in words is "seventy-seven billion, four hundred seventy-nine million, two hundred nine thousand, six hundred seventy-six".