65616151605156 has 96 divisors (see below), whose sum is σ = 170519616449280. Its totient is φ = 21820211142912.

The previous prime is 65616151605131. The next prime is 65616151605157. The reversal of 65616151605156 is 65150615161656.

65616151605156 is a `hidden beast` number, since 6 + 5 + 6 + 1 + 6 + 15 + 1 + 605 + 15 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (65616151605157) 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, 77492385 + ... + 78334551.

It is an arithmetic number, because the mean of its divisors is an integer number (1776246004680).

Almost surely, 2^{65616151605156} is an apocalyptic number.

It is an amenable number.

65616151605156 is an abundant number, since it is smaller than the sum of its proper divisors (104903464844124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65616151605156 is a wasteful number, since it uses less digits than its factorization.

65616151605156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843890 (or 843882 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 65616151605156 in words is "sixty-five trillion, six hundred sixteen billion, one hundred fifty-one million, six hundred five thousand, one hundred fifty-six".