51506614406 has 16 divisors (see below), whose sum is σ = 85137947664. Its totient is φ = 23219439264.

The previous prime is 51506614387. The next prime is 51506614427. The reversal of 51506614406 is 60441660515.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51506614406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23034041 + ... + 23036276.

It is an arithmetic number, because the mean of its divisors is an integer number (5321121729).

Almost surely, 2^51506614406 is an apocalyptic number.

51506614406 is a deficient number, since it is larger than the sum of its proper divisors (33631333258).

51506614406 is a wasteful number, since it uses less digits than its factorization.

51506614406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46070375.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 51506614406 in words is "fifty-one billion, five hundred six million, six hundred fourteen thousand, four hundred six".