63431626220 has 12 divisors (see below), whose sum is σ = 133206415104. Its totient is φ = 25372650480.

The previous prime is 63431626201. The next prime is 63431626273. The reversal of 63431626220 is 2262613436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585790636 + ... + 1585790675.

It is an arithmetic number, because the mean of its divisors is an integer number (11100534592).

Almost surely, 2^63431626220 is an apocalyptic number.

It is an amenable number.

63431626220 is an abundant number, since it is smaller than the sum of its proper divisors (69774788884).

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

63431626220 is a wasteful number, since it uses less digits than its factorization.

63431626220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171581320 (or 3171581318 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 63431626220 in words is "sixty-three billion, four hundred thirty-one million, six hundred twenty-six thousand, two hundred twenty".