63993425121 has 6 divisors (see below), whose sum is σ = 92434947410. Its totient is φ = 42662283408.

The previous prime is 63993425063. The next prime is 63993425219. The reversal of 63993425121 is 12152439936.

63993425121 is a `hidden beast` number, since 6 + 3 + 9 + 93 + 42 + 512 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33730995600 + 30262429521 = 183660^2 + 173961^2 .

It is not a de Polignac number, because 63993425121 - 2⁷ = 63993424993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63993025121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3555190276 + ... + 3555190293.

Almost surely, 2^63993425121 is an apocalyptic number.

It is an amenable number.

63993425121 is a deficient number, since it is larger than the sum of its proper divisors (28441522289).

63993425121 is a wasteful number, since it uses less digits than its factorization.

63993425121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110380575 (or 7110380572 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The spelling of 63993425121 in words is "sixty-three billion, nine hundred ninety-three million, four hundred twenty-five thousand, one hundred twenty-one".