660771503303772 has 24 divisors (see below), whose sum is σ = 1762057342143616. Its totient is φ = 188791858086768.

The previous prime is 660771503303761. The next prime is 660771503303839. The reversal of 660771503303772 is 277303305177066.

It is a super-2 number, since 2×660771503303772² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3933163710058 + ... + 3933163710225.

Almost surely, 2^{660771503303772} is an apocalyptic number.

It is an amenable number.

660771503303772 is an abundant number, since it is smaller than the sum of its proper divisors (1101285838839844).

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

660771503303772 is a wasteful number, since it uses less digits than its factorization.

660771503303772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866327420297 (or 7866327420295 counting only the distinct ones).

The product of its (nonzero) digits is 23337720, while the sum is 57.

The spelling of 660771503303772 in words is "six hundred sixty trillion, seven hundred seventy-one billion, five hundred three million, three hundred three thousand, seven hundred seventy-two".