663713025172 has 24 divisors (see below), whose sum is σ = 1181255332320. Its totient is φ = 326212179360.

The previous prime is 663713025161. The next prime is 663713025179. The reversal of 663713025172 is 271520317366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663713025179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4328643 + ... + 4479349.

It is an arithmetic number, because the mean of its divisors is an integer number (49218972180).

Almost surely, 2^663713025172 is an apocalyptic number.

It is an amenable number.

663713025172 is a deficient number, since it is larger than the sum of its proper divisors (517542307148).

663713025172 is a wasteful number, since it uses less digits than its factorization.

663713025172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169431 (or 169429 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 43.

The spelling of 663713025172 in words is "six hundred sixty-three billion, seven hundred thirteen million, twenty-five thousand, one hundred seventy-two".