51361974554 has 8 divisors (see below), whose sum is σ = 84046867488. Its totient is φ = 23346352060.

The previous prime is 51361974539. The next prime is 51361974623. The reversal of 51361974554 is 45547916315.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 1167317582 + ... + 1167317625.

It is an arithmetic number, because the mean of its divisors is an integer number (10505858436).

Almost surely, 2^51361974554 is an apocalyptic number.

51361974554 is a deficient number, since it is larger than the sum of its proper divisors (32684892934).

51361974554 is a wasteful number, since it uses less digits than its factorization.

51361974554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334635220.

The product of its digits is 2268000, while the sum is 50.

The spelling of 51361974554 in words is "fifty-one billion, three hundred sixty-one million, nine hundred seventy-four thousand, five hundred fifty-four".