51071715715061 has 4 divisors (see below), whose sum is σ = 51176585768352. Its totient is φ = 50966845661772.

The previous prime is 51071715715051. The next prime is 51071715715067. The reversal of 51071715715061 is 16051751717015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51071715715061 - 2¹⁰ = 51071715714037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51071715714997 and 51071715715015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071715715067) 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, 52435025915 + ... + 52435026888.

It is an arithmetic number, because the mean of its divisors is an integer number (12794146442088).

Almost surely, 2^{51071715715061} is an apocalyptic number.

It is an amenable number.

51071715715061 is a deficient number, since it is larger than the sum of its proper divisors (104870053291).

51071715715061 is a wasteful number, since it uses less digits than its factorization.

51071715715061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104870053290.

The product of its (nonzero) digits is 257250, while the sum is 47.

The spelling of 51071715715061 in words is "fifty-one trillion, seventy-one billion, seven hundred fifteen million, seven hundred fifteen thousand, sixty-one".