63161564420 has 96 divisors (see below), whose sum is σ = 142151224320. Its totient is φ = 23521236480.

The previous prime is 63161564419. The next prime is 63161564537. The reversal of 63161564420 is 2446516136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5082134 + ... + 5094546.

It is an arithmetic number, because the mean of its divisors is an integer number (1480741920).

Almost surely, 2^63161564420 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 63161564420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71075612160).

63161564420 is an abundant number, since it is smaller than the sum of its proper divisors (78989659900).

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

63161564420 is a wasteful number, since it uses less digits than its factorization.

63161564420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12765 (or 12763 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 63161564420 in words is "sixty-three billion, one hundred sixty-one million, five hundred sixty-four thousand, four hundred twenty".