51147934434 has 16 divisors (see below), whose sum is σ = 113662076640. Its totient is φ = 17049311460.

The previous prime is 51147934429. The next prime is 51147934441. The reversal of 51147934434 is 43443974115.

It is a happy number.

51147934434 is a `hidden beast` number, since 5 + 114 + 7 + 93 + 443 + 4 = 666.

It is a super-2 number, since 2×51147934434² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51147934434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473591932 + ... + 473592039.

It is an arithmetic number, because the mean of its divisors is an integer number (7103879790).

Almost surely, 2^51147934434 is an apocalyptic number.

51147934434 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51147934434 is an abundant number, since it is smaller than the sum of its proper divisors (62514142206).

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

51147934434 is a wasteful number, since it uses less digits than its factorization.

51147934434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947183982 (or 947183976 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 51147934434 in words is "fifty-one billion, one hundred forty-seven million, nine hundred thirty-four thousand, four hundred thirty-four".