51948168104 has 24 divisors (see below), whose sum is σ = 113305316490. Its totient is φ = 22263500448.

The previous prime is 51948168079. The next prime is 51948168143. The reversal of 51948168104 is 40186184915.

It can be written as a sum of positive squares in only one way, i.e., 51089560900 + 858607204 = 226030^2 + 29302^2 .

It is a super-2 number, since 2×51948168104² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 66260027 + ... + 66260810.

Almost surely, 2^51948168104 is an apocalyptic number.

It is an amenable number.

51948168104 is an abundant number, since it is smaller than the sum of its proper divisors (61357148386).

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

51948168104 is a wasteful number, since it uses less digits than its factorization.

51948168104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132520857 (or 132520846 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 51948168104 in words is "fifty-one billion, nine hundred forty-eight million, one hundred sixty-eight thousand, one hundred four".