660615025120 has 96 divisors (see below), whose sum is σ = 1664398562400. Its totient is φ = 246912761856.

The previous prime is 660615025111. The next prime is 660615025127. The reversal of 660615025120 is 21520516066.

It is a super-2 number, since 2×660615025120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660615025127) 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, 495565 + ... + 1251724.

It is an arithmetic number, because the mean of its divisors is an integer number (17337485025).

Almost surely, 2^660615025120 is an apocalyptic number.

It is an amenable number.

660615025120 is an abundant number, since it is smaller than the sum of its proper divisors (1003783537280).

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

660615025120 is a wasteful number, since it uses less digits than its factorization.

660615025120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747460 (or 1747452 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 660615025120 in words is "six hundred sixty billion, six hundred fifteen million, twenty-five thousand, one hundred twenty".