63120358881 has 6 divisors (see below), whose sum is σ = 91173851730. Its totient is φ = 42080239248.

The previous prime is 63120358877. The next prime is 63120358897. The reversal of 63120358881 is 18885302136.

63120358881 is a `hidden beast` number, since 63 + 1 + 2 + 0 + 3 + 588 + 8 + 1 = 666.

63120358881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 54471358881 + 8649000000 = 233391^2 + 93000^2 .

It is not a de Polignac number, because 63120358881 - 2² = 63120358877 is a prime.

It is a super-2 number, since 2×63120358881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63120358801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3506686596 + ... + 3506686613.

It is an arithmetic number, because the mean of its divisors is an integer number (15195641955).

Almost surely, 2^63120358881 is an apocalyptic number.

It is an amenable number.

63120358881 is a deficient number, since it is larger than the sum of its proper divisors (28053492849).

63120358881 is a wasteful number, since it uses less digits than its factorization.

63120358881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013373215 (or 7013373212 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 63120358881 in words is "sixty-three billion, one hundred twenty million, three hundred fifty-eight thousand, eight hundred eighty-one".