51226457616 has 40 divisors (see below), whose sum is σ = 147038907360. Its totient is φ = 17075485728.

The previous prime is 51226457599. The next prime is 51226457651. The reversal of 51226457616 is 61675462215.

51226457616 is a `hidden beast` number, since 5 + 1 + 2 + 2 + 64 + 576 + 16 = 666.

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, 59289450 + ... + 59290313.

It is an arithmetic number, because the mean of its divisors is an integer number (3675972684).

Almost surely, 2^51226457616 is an apocalyptic number.

It is an amenable number.

51226457616 is an abundant number, since it is smaller than the sum of its proper divisors (95812449744).

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

51226457616 is a wasteful number, since it uses less digits than its factorization.

51226457616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118579780 (or 118579768 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 51226457616 in words is "fifty-one billion, two hundred twenty-six million, four hundred fifty-seven thousand, six hundred sixteen".