51490404092 has 12 divisors (see below), whose sum is σ = 94850744520. Its totient is φ = 24390191376.

The previous prime is 51490404059. The next prime is 51490404103. The reversal of 51490404092 is 29040409415.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338752583 + ... + 338752734.

It is an arithmetic number, because the mean of its divisors is an integer number (7904228710).

Almost surely, 2^51490404092 is an apocalyptic number.

It is an amenable number.

51490404092 is a deficient number, since it is larger than the sum of its proper divisors (43360340428).

51490404092 is a wasteful number, since it uses less digits than its factorization.

51490404092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677505340 (or 677505338 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 51490404092 in words is "fifty-one billion, four hundred ninety million, four hundred four thousand, ninety-two".