664635655148 has 12 divisors (see below), whose sum is σ = 1169201991552. Its totient is φ = 330577943280.

The previous prime is 664635655129. The next prime is 664635655157. The reversal of 664635655148 is 841556536466.

It is a super-2 number, since 2×664635655148² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434970215 + ... + 434971742.

It is an arithmetic number, because the mean of its divisors is an integer number (97433499296).

Almost surely, 2^664635655148 is an apocalyptic number.

It is an amenable number.

664635655148 is a deficient number, since it is larger than the sum of its proper divisors (504566336404).

664635655148 is a wasteful number, since it uses less digits than its factorization.

664635655148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869942152 (or 869942150 counting only the distinct ones).

The product of its digits is 62208000, while the sum is 59.

The spelling of 664635655148 in words is "six hundred sixty-four billion, six hundred thirty-five million, six hundred fifty-five thousand, one hundred forty-eight".