77008239486 has 40 divisors (see below), whose sum is σ = 178505700120. Its totient is φ = 24784259472.

The previous prime is 77008239479. The next prime is 77008239559. The reversal of 77008239486 is 68493280077.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8191156 + ... + 8200551.

It is an arithmetic number, because the mean of its divisors is an integer number (4462642503).

Almost surely, 2^77008239486 is an apocalyptic number.

77008239486 is an abundant number, since it is smaller than the sum of its proper divisors (101497460634).

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

77008239486 is a wasteful number, since it uses less digits than its factorization.

77008239486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16391750 (or 16391741 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 77008239486 in words is "seventy-seven billion, eight million, two hundred thirty-nine thousand, four hundred eighty-six".