660212492940 has 288 divisors, whose sum is σ = 2688866159616. Its totient is φ = 126634129920.

The previous prime is 660212492897. The next prime is 660212492941. The reversal of 660212492940 is 49294212066.

660212492940 is a `hidden beast` number, since 6 + 60 + 2 + 12 + 492 + 94 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (660212492941) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1651912 + ... + 2012271.

It is an arithmetic number, because the mean of its divisors is an integer number (9336340832).

Almost surely, 2^660212492940 is an apocalyptic number.

660212492940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660212492940 is an abundant number, since it is smaller than the sum of its proper divisors (2028653666676).

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

660212492940 is a wasteful number, since it uses less digits than its factorization.

660212492940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664229 (or 3664224 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 660212492940 in words is "six hundred sixty billion, two hundred twelve million, four hundred ninety-two thousand, nine hundred forty".