63663640140064 has 12 divisors (see below), whose sum is σ = 125337791525814. Its totient is φ = 31831820070016.

The previous prime is 63663640140049. The next prime is 63663640140077. The reversal of 63663640140064 is 46004104636636.

It can be written as a sum of positive squares in only one way, i.e., 57819295210000 + 5844344930064 = 7603900^2 + 2417508^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 994744377157 + ... + 994744377220.

Almost surely, 2^{63663640140064} is an apocalyptic number.

It is an amenable number.

63663640140064 is a deficient number, since it is larger than the sum of its proper divisors (61674151385750).

63663640140064 is a wasteful number, since it uses less digits than its factorization.

63663640140064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989488754387 (or 1989488754379 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 49.

The spelling of 63663640140064 in words is "sixty-three trillion, six hundred sixty-three billion, six hundred forty million, one hundred forty thousand, sixty-four".