660036116520 has 192 divisors, whose sum is σ = 2403375287040. Its totient is φ = 155684160000.

The previous prime is 660036116497. The next prime is 660036116567. The reversal of 660036116520 is 25611630066.

660036116520 is a `hidden beast` number, since 6 + 60 + 0 + 3 + 61 + 16 + 520 = 666.

It is a super-2 number, since 2×660036116520² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2105856 + ... + 2398895.

It is an arithmetic number, because the mean of its divisors is an integer number (12517579620).

Almost surely, 2^660036116520 is an apocalyptic number.

660036116520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660036116520 is an abundant number, since it is smaller than the sum of its proper divisors (1743339170520).

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

660036116520 is a wasteful number, since it uses less digits than its factorization.

660036116520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504816 (or 4504809 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 660036116520 its reverse (25611630066), we get a palindrome (685647746586).

The spelling of 660036116520 in words is "six hundred sixty billion, thirty-six million, one hundred sixteen thousand, five hundred twenty".