51660165146667 has 32 divisors (see below), whose sum is σ = 85877065935360. Its totient is φ = 26836315749120.

The previous prime is 51660165146617. The next prime is 51660165146701. The reversal of 51660165146667 is 76664156106615.

It is not a de Polignac number, because 51660165146667 - 2⁷ = 51660165146539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51660165146667.

It is not an unprimeable number, because it can be changed into a prime (51660165146617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60260143 + ... + 61111415.

It is an arithmetic number, because the mean of its divisors is an integer number (2683658310480).

Almost surely, 2^{51660165146667} is an apocalyptic number.

51660165146667 is a deficient number, since it is larger than the sum of its proper divisors (34216900788693).

51660165146667 is a wasteful number, since it uses less digits than its factorization.

51660165146667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114003.

The product of its (nonzero) digits is 32659200, while the sum is 60.

The spelling of 51660165146667 in words is "fifty-one trillion, six hundred sixty billion, one hundred sixty-five million, one hundred forty-six thousand, six hundred sixty-seven".