664551236612 has 12 divisors (see below), whose sum is σ = 1179344448576. Its totient is φ = 327595679880.

The previous prime is 664551236599. The next prime is 664551236707. The reversal of 664551236612 is 216632155466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169984288 + ... + 1169984855.

It is an arithmetic number, because the mean of its divisors is an integer number (98278704048).

Almost surely, 2^664551236612 is an apocalyptic number.

It is an amenable number.

664551236612 is a deficient number, since it is larger than the sum of its proper divisors (514793211964).

664551236612 is a wasteful number, since it uses less digits than its factorization.

664551236612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339969218 (or 2339969216 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The spelling of 664551236612 in words is "six hundred sixty-four billion, five hundred fifty-one million, two hundred thirty-six thousand, six hundred twelve".