51904998278 has 16 divisors (see below), whose sum is σ = 89003922720. Its totient is φ = 22239017856.

The previous prime is 51904998253. The next prime is 51904998287. The reversal of 51904998278 is 87289940915.

51904998278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 51904998278.

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, 444323 + ... + 548846.

It is an arithmetic number, because the mean of its divisors is an integer number (5562745170).

Almost surely, 2^51904998278 is an apocalyptic number.

51904998278 is a deficient number, since it is larger than the sum of its proper divisors (37098924442).

51904998278 is a wasteful number, since it uses less digits than its factorization.

51904998278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996911.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 51904998278 in words is "fifty-one billion, nine hundred four million, nine hundred ninety-eight thousand, two hundred seventy-eight".