669656152980 has 96 divisors (see below), whose sum is σ = 2083684780800. Its totient is φ = 178548395904.

The previous prime is 669656152973. The next prime is 669656153003. The reversal of 669656152980 is 89251656966.

669656152980 is a `hidden beast` number, since 6 + 6 + 9 + 6 + 5 + 615 + 2 + 9 + 8 + 0 = 666.

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, 3682026 + ... + 3859614.

It is an arithmetic number, because the mean of its divisors is an integer number (21705049800).

Almost surely, 2^669656152980 is an apocalyptic number.

669656152980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669656152980 is an abundant number, since it is smaller than the sum of its proper divisors (1414028627820).

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

669656152980 is a wasteful number, since it uses less digits than its factorization.

669656152980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184590 (or 184582 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 669656152980 in words is "six hundred sixty-nine billion, six hundred fifty-six million, one hundred fifty-two thousand, nine hundred eighty".