51450163774 has 16 divisors (see below), whose sum is σ = 82865884896. Its totient is φ = 23870828800.

The previous prime is 51450163637. The next prime is 51450163781. The reversal of 51450163774 is 47736105415.

It is a self number, because there is not a number n which added to its sum of digits gives 51450163774.

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, 10654207 + ... + 10659034.

It is an arithmetic number, because the mean of its divisors is an integer number (5179117806).

Almost surely, 2^51450163774 is an apocalyptic number.

51450163774 is a deficient number, since it is larger than the sum of its proper divisors (31415721122).

51450163774 is a wasteful number, since it uses less digits than its factorization.

51450163774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21313331.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 51450163774 in words is "fifty-one billion, four hundred fifty million, one hundred sixty-three thousand, seven hundred seventy-four".