63011538 has 18 divisors (see below), whose sum is σ = 136598007. Its totient is φ = 20992620.

The previous prime is 63011527. The next prime is 63011567. The reversal of 63011538 is 83511036.

It can be written as a sum of positive squares in only one way, i.e., 31505769 + 31505769 = 5613^2 + 5613^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5613.

It is a super-2 number, since 2×63011538² = 7940907842250888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32743 + ... + 34613.

Almost surely, 2^63011538 is an apocalyptic number.

63011538 is an abundant number, since it is smaller than the sum of its proper divisors (73586469).

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

63011538 is an equidigital number, since it uses as much as digits as its factorization.

63011538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750 (or 1876 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 63011538 is about 7937.9807256002. The cubic root of 63011538 is about 397.9300105037.

The spelling of 63011538 in words is "sixty-three million, eleven thousand, five hundred thirty-eight".