660818057152 has 28 divisors (see below), whose sum is σ = 1430520909336. Its totient is φ = 300371843840.

The previous prime is 660818057129. The next prime is 660818057197. The reversal of 660818057152 is 251750818066.

It is a super-2 number, since 2×660818057152² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 660818057096 and 660818057105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469330303 + ... + 469331710.

Almost surely, 2^660818057152 is an apocalyptic number.

It is an amenable number.

660818057152 is an abundant number, since it is smaller than the sum of its proper divisors (769702852184).

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

660818057152 is a wasteful number, since it uses less digits than its factorization.

660818057152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938662036 (or 938662026 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The spelling of 660818057152 in words is "six hundred sixty billion, eight hundred eighteen million, fifty-seven thousand, one hundred fifty-two".