49777869678 has 32 divisors (see below), whose sum is σ = 100605352320. Its totient is φ = 16418419680.

The previous prime is 49777869649. The next prime is 49777869689. The reversal of 49777869678 is 87696877794.

It is a congruent number.

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, 181488 + ... + 363996.

It is an arithmetic number, because the mean of its divisors is an integer number (3143917260).

Almost surely, 2^49777869678 is an apocalyptic number.

49777869678 is an abundant number, since it is smaller than the sum of its proper divisors (50827482642).

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

49777869678 is a wasteful number, since it uses less digits than its factorization.

49777869678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182992.

The product of its digits is 1792336896, while the sum is 78.

The spelling of 49777869678 in words is "forty-nine billion, seven hundred seventy-seven million, eight hundred sixty-nine thousand, six hundred seventy-eight".