63755919872 has 30 divisors (see below), whose sum is σ = 127398733143. Its totient is φ = 31875103232.

The previous prime is 63755919833. The next prime is 63755919881. The reversal of 63755919872 is 27891955736.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 31877959936 + 31877959936 = 178544^2 + 178544^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=178544.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5707829 + ... + 5718987.

Almost surely, 2^63755919872 is an apocalyptic number.

It is an amenable number.

63755919872 is a deficient number, since it is larger than the sum of its proper divisors (63642813271).

63755919872 is an frugal number, since it uses more digits than its factorization.

63755919872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22336 (or 11161 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 62.

The spelling of 63755919872 in words is "sixty-three billion, seven hundred fifty-five million, nine hundred nineteen thousand, eight hundred seventy-two".