63737238645 has 24 divisors (see below), whose sum is σ = 110897968896. Its totient is φ = 33863935968.

The previous prime is 63737238629. The next prime is 63737238683. The reversal of 63737238645 is 54683273736.

63737238645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63737238645 - 2⁴ = 63737238629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63737238591 and 63737238600.

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, 2680909 + ... + 2704578.

It is an arithmetic number, because the mean of its divisors is an integer number (4620748704).

Almost surely, 2^63737238645 is an apocalyptic number.

It is an amenable number.

63737238645 is a deficient number, since it is larger than the sum of its proper divisors (47160730251).

63737238645 is a wasteful number, since it uses less digits than its factorization.

63737238645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5385761 (or 5385758 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 54.

The spelling of 63737238645 in words is "sixty-three billion, seven hundred thirty-seven million, two hundred thirty-eight thousand, six hundred forty-five".