63513591912972 has 96 divisors (see below), whose sum is σ = 170360069880000. Its totient is φ = 20439103652352.

The previous prime is 63513591912959. The next prime is 63513591912989. The reversal of 63513591912972 is 27921919531536.

63513591912972 is a `hidden beast` number, since 6 + 3 + 5 + 1 + 359 + 191 + 2 + 97 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30335154 + ... + 32361222.

It is an arithmetic number, because the mean of its divisors is an integer number (1774584061250).

Almost surely, 2^{63513591912972} is an apocalyptic number.

It is an amenable number.

63513591912972 is an abundant number, since it is smaller than the sum of its proper divisors (106846477967028).

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

63513591912972 is a wasteful number, since it uses less digits than its factorization.

63513591912972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036120 (or 2036112 counting only the distinct ones).

The product of its digits is 27556200, while the sum is 63.

The spelling of 63513591912972 in words is "sixty-three trillion, five hundred thirteen billion, five hundred ninety-one million, nine hundred twelve thousand, nine hundred seventy-two".