63155138 has 16 divisors (see below), whose sum is σ = 96720480. Its totient is φ = 30920736.

The previous prime is 63155123. The next prime is 63155143. The reversal of 63155138 is 83155136.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22670 + ... + 25302.

It is an arithmetic number, because the mean of its divisors is an integer number (6045030).

Almost surely, 2^63155138 is an apocalyptic number.

63155138 is a deficient number, since it is larger than the sum of its proper divisors (33565342).

63155138 is a wasteful number, since it uses less digits than its factorization.

63155138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881.

The product of its digits is 10800, while the sum is 32.

The square root of 63155138 is about 7947.0206996081. The cubic root of 63155138 is about 398.2320683900.

The spelling of 63155138 in words is "sixty-three million, one hundred fifty-five thousand, one hundred thirty-eight".