63860677901921 has 16 divisors (see below), whose sum is σ = 67775821027200. Its totient is φ = 60040696940928.

The previous prime is 63860677901863. The next prime is 63860677901929. The reversal of 63860677901921 is 12910977606836.

It is a cyclic number.

It is not a de Polignac number, because 63860677901921 - 2¹⁰ = 63860677900897 is a prime.

It is a super-2 number, since 2×63860677901921² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63860677901929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6892415 + ... + 13237323.

It is an arithmetic number, because the mean of its divisors is an integer number (4235988814200).

Almost surely, 2^{63860677901921} is an apocalyptic number.

It is an amenable number.

63860677901921 is a deficient number, since it is larger than the sum of its proper divisors (3915143125279).

63860677901921 is a wasteful number, since it uses less digits than its factorization.

63860677901921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6352408.

The product of its (nonzero) digits is 41150592, while the sum is 65.

The spelling of 63860677901921 in words is "sixty-three trillion, eight hundred sixty billion, six hundred seventy-seven million, nine hundred one thousand, nine hundred twenty-one".