63431120634621 has 8 divisors (see below), whose sum is σ = 84615704673120. Its totient is φ = 42266975176272.

The previous prime is 63431120634617. The next prime is 63431120634647. The reversal of 63431120634621 is 12643602113436.

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

It is not a de Polignac number, because 63431120634621 - 2² = 63431120634617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63431120634601) 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, 5109637795 + ... + 5109650208.

It is an arithmetic number, because the mean of its divisors is an integer number (10576963084140).

Almost surely, 2^{63431120634621} is an apocalyptic number.

It is an amenable number.

63431120634621 is a deficient number, since it is larger than the sum of its proper divisors (21184584038499).

63431120634621 is a wasteful number, since it uses less digits than its factorization.

63431120634621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219290075.

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 63431120634621 in words is "sixty-three trillion, four hundred thirty-one billion, one hundred twenty million, six hundred thirty-four thousand, six hundred twenty-one".