663612652944 has 60 divisors (see below), whose sum is σ = 1879569606096. Its totient is φ = 218539102656.

The previous prime is 663612652933. The next prime is 663612653059. The reversal of 663612652944 is 449256216366.

663612652944 is a `hidden beast` number, since 6 + 63 + 6 + 12 + 6 + 529 + 44 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27749622 + ... + 27773525.

Almost surely, 2^663612652944 is an apocalyptic number.

It is an amenable number.

663612652944 is an abundant number, since it is smaller than the sum of its proper divisors (1215956953152).

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

663612652944 is a wasteful number, since it uses less digits than its factorization.

663612652944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55523244 (or 55523235 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The spelling of 663612652944 in words is "six hundred sixty-three billion, six hundred twelve million, six hundred fifty-two thousand, nine hundred forty-four".