51777199474 has 256 divisors, whose sum is σ = 111179464704. Its totient is φ = 17443641600.

The previous prime is 51777199457. The next prime is 51777199549. The reversal of 51777199474 is 47499177715.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 271084719 + ... + 271084909.

It is an arithmetic number, because the mean of its divisors is an integer number (434294784).

Almost surely, 2^51777199474 is an apocalyptic number.

51777199474 is an abundant number, since it is smaller than the sum of its proper divisors (59402265230).

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

51777199474 is a wasteful number, since it uses less digits than its factorization.

51777199474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its digits is 15558480, while the sum is 61.

The spelling of 51777199474 in words is "fifty-one billion, seven hundred seventy-seven million, one hundred ninety-nine thousand, four hundred seventy-four".