63578725871 has 8 divisors (see below), whose sum is σ = 67230377088. Its totient is φ = 60027120000.

The previous prime is 63578725843. The next prime is 63578725883. The reversal of 63578725871 is 17852787536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63578725871 - 2²² = 63574531567 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 63578725871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63578725801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25010030 + ... + 25012571.

It is an arithmetic number, because the mean of its divisors is an integer number (8403797136).

Almost surely, 2^63578725871 is an apocalyptic number.

63578725871 is a deficient number, since it is larger than the sum of its proper divisors (3651651217).

63578725871 is a wasteful number, since it uses less digits than its factorization.

63578725871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50022673.

The product of its digits is 19756800, while the sum is 59.

The spelling of 63578725871 in words is "sixty-three billion, five hundred seventy-eight million, seven hundred twenty-five thousand, eight hundred seventy-one".