51054122394 has 64 divisors (see below), whose sum is σ = 127760117760. Its totient is φ = 14971878000.

The previous prime is 51054122389. The next prime is 51054122443. The reversal of 51054122394 is 49322145015.

51054122394 is a `hidden beast` number, since 5 + 1 + 0 + 5 + 412 + 239 + 4 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1367872 + ... + 1404699.

It is an arithmetic number, because the mean of its divisors is an integer number (1996251840).

Almost surely, 2^51054122394 is an apocalyptic number.

51054122394 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51054122394 is an abundant number, since it is smaller than the sum of its proper divisors (76705995366).

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

51054122394 is a wasteful number, since it uses less digits than its factorization.

51054122394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772624 (or 2772618 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 51054122394 in words is "fifty-one billion, fifty-four million, one hundred twenty-two thousand, three hundred ninety-four".