77908952286 has 24 divisors (see below), whose sum is σ = 184148433144. Its totient is φ = 23608773360.

The previous prime is 77908952263. The next prime is 77908952293. The reversal of 77908952286 is 68225980977.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196739581 + ... + 196739976.

It is an arithmetic number, because the mean of its divisors is an integer number (7672851381).

Almost surely, 2^77908952286 is an apocalyptic number.

77908952286 is an abundant number, since it is smaller than the sum of its proper divisors (106239480858).

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

77908952286 is a wasteful number, since it uses less digits than its factorization.

77908952286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393479576 (or 393479573 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 77908952286 in words is "seventy-seven billion, nine hundred eight million, nine hundred fifty-two thousand, two hundred eighty-six".