63426120464 has 120 divisors (see below), whose sum is σ = 144794482560. Its totient is φ = 26365160448.

The previous prime is 63426120449. The next prime is 63426120503. The reversal of 63426120464 is 46402162436.

63426120464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63426120464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87243269 + ... + 87243995.

It is an arithmetic number, because the mean of its divisors is an integer number (1206620688).

Almost surely, 2^63426120464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63426120464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72397241280).

63426120464 is an abundant number, since it is smaller than the sum of its proper divisors (81368362096).

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

63426120464 is a wasteful number, since it uses less digits than its factorization.

63426120464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1342 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 63426120464 in words is "sixty-three billion, four hundred twenty-six million, one hundred twenty thousand, four hundred sixty-four".