63215440432 has 20 divisors (see below), whose sum is σ = 122515970976. Its totient is φ = 31598415680.

The previous prime is 63215440397. The next prime is 63215440433. The reversal of 63215440432 is 23404451236.

It is not an unprimeable number, because it can be changed into a prime (63215440433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525319 + ... + 634342.

Almost surely, 2^63215440432 is an apocalyptic number.

It is an amenable number.

63215440432 is a deficient number, since it is larger than the sum of its proper divisors (59300530544).

63215440432 is a wasteful number, since it uses less digits than its factorization.

63215440432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163076 (or 1163070 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 63215440432 its reverse (23404451236), we get a palindrome (86619891668).

The spelling of 63215440432 in words is "sixty-three billion, two hundred fifteen million, four hundred forty thousand, four hundred thirty-two".