151616660065 has 16 divisors (see below), whose sum is σ = 196791008400. Its totient is φ = 111474139392.

The previous prime is 151616660059. The next prime is 151616660089. The reversal of 151616660065 is 560066616151.

It can be written as a sum of positive squares in 8 ways, for example, as 16228721664 + 135387938401 = 127392^2 + 367951^2 .

It is a cyclic number.

It is not a de Polignac number, because 151616660065 - 2⁵ = 151616660033 is a prime.

It is a super-2 number, since 2×151616660065² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5078050 + ... + 5107819.

It is an arithmetic number, because the mean of its divisors is an integer number (12299438025).

Almost surely, 2^151616660065 is an apocalyptic number.

It is an amenable number.

151616660065 is a deficient number, since it is larger than the sum of its proper divisors (45174348335).

151616660065 is a wasteful number, since it uses less digits than its factorization.

151616660065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186116.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 151616660065 in words is "one hundred fifty-one billion, six hundred sixteen million, six hundred sixty thousand, sixty-five".