63781538272 has 12 divisors (see below), whose sum is σ = 125569903536. Its totient is φ = 31890769120.

The previous prime is 63781538269. The next prime is 63781538291. The reversal of 63781538272 is 27283518736.

63781538272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996586504 + ... + 996586567.

It is an arithmetic number, because the mean of its divisors is an integer number (10464158628).

Almost surely, 2^63781538272 is an apocalyptic number.

It is an amenable number.

63781538272 is a deficient number, since it is larger than the sum of its proper divisors (61788365264).

63781538272 is a wasteful number, since it uses less digits than its factorization.

63781538272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993173081 (or 1993173073 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 63781538272 in words is "sixty-three billion, seven hundred eighty-one million, five hundred thirty-eight thousand, two hundred seventy-two".