51616561615151 has 16 divisors (see below), whose sum is σ = 58858568937504. Its totient is φ = 44842071343104.

The previous prime is 51616561615147. The next prime is 51616561615169. The reversal of 51616561615151 is 15151616561615.

It is a cyclic number.

It is not a de Polignac number, because 51616561615151 - 2² = 51616561615147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51616561615151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616561612151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4500335 + ... + 11112431.

It is an arithmetic number, because the mean of its divisors is an integer number (3678660558594).

Almost surely, 2^{51616561615151} is an apocalyptic number.

51616561615151 is a deficient number, since it is larger than the sum of its proper divisors (7242007322353).

51616561615151 is a wasteful number, since it uses less digits than its factorization.

51616561615151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6647450.

The product of its digits is 810000, while the sum is 50.

The spelling of 51616561615151 in words is "fifty-one trillion, six hundred sixteen billion, five hundred sixty-one million, six hundred fifteen thousand, one hundred fifty-one".