51111834984 has 48 divisors (see below), whose sum is σ = 158203300320. Its totient is φ = 14603381280.

The previous prime is 51111834859. The next prime is 51111835037. The reversal of 51111834984 is 48943811115.

51111834984 is a `hidden beast` number, since 511 + 1 + 18 + 3 + 49 + 84 = 666.

It is a super-2 number, since 2×51111834984² (a number of 22 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 50705682 + ... + 50706689.

It is an arithmetic number, because the mean of its divisors is an integer number (3295902090).

Almost surely, 2^51111834984 is an apocalyptic number.

It is an amenable number.

51111834984 is an abundant number, since it is smaller than the sum of its proper divisors (107091465336).

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

51111834984 is a wasteful number, since it uses less digits than its factorization.

51111834984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101412390 (or 101412383 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The spelling of 51111834984 in words is "fifty-one billion, one hundred eleven million, eight hundred thirty-four thousand, nine hundred eighty-four".