63239272728 has 16 divisors (see below), whose sum is σ = 158098181880. Its totient is φ = 21079757568.

The previous prime is 63239272703. The next prime is 63239272741. The reversal of 63239272728 is 82727293236.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317484825 + ... + 1317484872.

Almost surely, 2^63239272728 is an apocalyptic number.

It is an amenable number.

63239272728 is an abundant number, since it is smaller than the sum of its proper divisors (94858909152).

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

63239272728 is a wasteful number, since it uses less digits than its factorization.

63239272728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634969706 (or 2634969702 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The spelling of 63239272728 in words is "sixty-three billion, two hundred thirty-nine million, two hundred seventy-two thousand, seven hundred twenty-eight".