51904942248 has 16 divisors (see below), whose sum is σ = 129762355680. Its totient is φ = 17301647408.

The previous prime is 51904942247. The next prime is 51904942253. The reversal of 51904942248 is 84224940915.

It is a junction number, because it is equal to n+sod(n) for n = 51904942197 and 51904942206.

It is not an unprimeable number, because it can be changed into a prime (51904942247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081352940 + ... + 1081352987.

It is an arithmetic number, because the mean of its divisors is an integer number (8110147230).

Almost surely, 2^51904942248 is an apocalyptic number.

It is an amenable number.

51904942248 is an abundant number, since it is smaller than the sum of its proper divisors (77857413432).

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

51904942248 is a wasteful number, since it uses less digits than its factorization.

51904942248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162705936 (or 2162705932 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 51904942248 in words is "fifty-one billion, nine hundred four million, nine hundred forty-two thousand, two hundred forty-eight".