665361754772 has 96 divisors (see below), whose sum is σ = 1429089951744. Its totient is φ = 266911574400.

The previous prime is 665361754751. The next prime is 665361754789. The reversal of 665361754772 is 277457163566.

665361754772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1245713 + ... + 1697799.

It is an arithmetic number, because the mean of its divisors is an integer number (14886353664).

Almost surely, 2^665361754772 is an apocalyptic number.

665361754772 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

665361754772 is an abundant number, since it is smaller than the sum of its proper divisors (763728196972).

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

665361754772 is a wasteful number, since it uses less digits than its factorization.

665361754772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452229 (or 452227 counting only the distinct ones).

The product of its digits is 44452800, while the sum is 59.

The spelling of 665361754772 in words is "six hundred sixty-five billion, three hundred sixty-one million, seven hundred fifty-four thousand, seven hundred seventy-two".