51904686276 has 63 divisors (see below), whose sum is σ = 136219788831. Its totient is φ = 17297461224.

The previous prime is 51904686221. The next prime is 51904686299. The reversal of 51904686276 is 67268640915.

The square root of 51904686276 is 227826.

It is a perfect power (a square), and thus also a powerful number.

51904686276 is a `hidden beast` number, since 5 + 1 + 9 + 0 + 4 + 6 + 8 + 627 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 12300495 + ... + 12304713.

Almost surely, 2^51904686276 is an apocalyptic number.

51904686276 is the 227826-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51904686276

51904686276 is an abundant number, since it is smaller than the sum of its proper divisors (84315102555).

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

51904686276 is an frugal number, since it uses more digits than its factorization.

51904686276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8460 (or 4224 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 51904686276 in words is "fifty-one billion, nine hundred four million, six hundred eighty-six thousand, two hundred seventy-six".