51715479251261 has 8 divisors (see below), whose sum is σ = 59118221487360. Its totient is φ = 44316441172368.

The previous prime is 51715479251213. The next prime is 51715479251281. The reversal of 51715479251261 is 16215297451715.

51715479251261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51715479251261 - 2³⁴ = 51698299382077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51715479251197 and 51715479251206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51715479251281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926009381 + ... + 926065226.

It is an arithmetic number, because the mean of its divisors is an integer number (7389777685920).

Almost surely, 2^{51715479251261} is an apocalyptic number.

It is an amenable number.

51715479251261 is a deficient number, since it is larger than the sum of its proper divisors (7402742236099).

51715479251261 is a wasteful number, since it uses less digits than its factorization.

51715479251261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852078603.

The product of its digits is 5292000, while the sum is 56.

The spelling of 51715479251261 in words is "fifty-one trillion, seven hundred fifteen billion, four hundred seventy-nine million, two hundred fifty-one thousand, two hundred sixty-one".