51611562130165 has 8 divisors (see below), whose sum is σ = 63251616568320. Its totient is φ = 40410755029392.

The previous prime is 51611562130151. The next prime is 51611562130199. The reversal of 51611562130165 is 56103126511615.

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 51611562130165 - 2²⁷ = 51611427912437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109811834085 + ... + 109811834554.

It is an arithmetic number, because the mean of its divisors is an integer number (7906452071040).

Almost surely, 2^{51611562130165} is an apocalyptic number.

It is an amenable number.

51611562130165 is a deficient number, since it is larger than the sum of its proper divisors (11640054438155).

51611562130165 is a wasteful number, since it uses less digits than its factorization.

51611562130165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219623668691.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 51611562130165 in words is "fifty-one trillion, six hundred eleven billion, five hundred sixty-two million, one hundred thirty thousand, one hundred sixty-five".