63721422412736 has 112 divisors (see below), whose sum is σ = 140600959364448. Its totient is φ = 28408745164800.

The previous prime is 63721422412721. The next prime is 63721422412759.

63721422412736 is nontrivially palindromic in base 10.

It is a congruent number.

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, 13057496 + ... + 17260968.

Almost surely, 2^{63721422412736} 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 63721422412736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70300479682224).

63721422412736 is an abundant number, since it is smaller than the sum of its proper divisors (76879536951712).

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

63721422412736 is a wasteful number, since it uses less digits than its factorization.

63721422412736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4203910 (or 4203900 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 50.

It can be divided in two parts, 6372142 and 2412736, that added together give a palindrome (8784878).

The spelling of 63721422412736 in words is "sixty-three trillion, seven hundred twenty-one billion, four hundred twenty-two million, four hundred twelve thousand, seven hundred thirty-six".