63453340931 has 4 divisors (see below), whose sum is σ = 65641387200. Its totient is φ = 61265294664.

The previous prime is 63453340919. The next prime is 63453340961. The reversal of 63453340931 is 13904335436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63453340931 is a prime.

It is a super-2 number, since 2×63453340931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63453340961) 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, 1094023091 + ... + 1094023148.

It is an arithmetic number, because the mean of its divisors is an integer number (16410346800).

Almost surely, 2^63453340931 is an apocalyptic number.

63453340931 is a deficient number, since it is larger than the sum of its proper divisors (2188046269).

63453340931 is a wasteful number, since it uses less digits than its factorization.

63453340931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188046268.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 63453340931 in words is "sixty-three billion, four hundred fifty-three million, three hundred forty thousand, nine hundred thirty-one".