63138355 has 16 divisors (see below), whose sum is σ = 88012224. Its totient is φ = 42583680.

The previous prime is 63138337. The next prime is 63138371. The reversal of 63138355 is 55383136.

It is not a de Polignac number, because 63138355 - 2²⁵ = 29583923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63138355.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12652 + ... + 16921.

It is an arithmetic number, because the mean of its divisors is an integer number (5500764).

Almost surely, 2^63138355 is an apocalyptic number.

63138355 is a deficient number, since it is larger than the sum of its proper divisors (24873869).

63138355 is a wasteful number, since it uses less digits than its factorization.

63138355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29646.

The product of its digits is 32400, while the sum is 34.

The square root of 63138355 is about 7945.9646991413. The cubic root of 63138355 is about 398.1967895453.

The spelling of 63138355 in words is "sixty-three million, one hundred thirty-eight thousand, three hundred fifty-five".