63402426416 has 80 divisors (see below), whose sum is σ = 141956914176. Its totient is φ = 26871091968.

The previous prime is 63402426407. The next prime is 63402426421. The reversal of 63402426416 is 61462420436.

It is a self number, because there is not a number n which added to its sum of digits gives 63402426416.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676085 + ... + 3693291.

Almost surely, 2^63402426416 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 63402426416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70978457088).

63402426416 is an abundant number, since it is smaller than the sum of its proper divisors (78554487760).

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

63402426416 is a wasteful number, since it uses less digits than its factorization.

63402426416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17586 (or 17580 counting only the distinct ones).

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

The spelling of 63402426416 in words is "sixty-three billion, four hundred two million, four hundred twenty-six thousand, four hundred sixteen".