63569898945 has 48 divisors (see below), whose sum is σ = 132556794240. Its totient is φ = 27531021312.

The previous prime is 63569898929. The next prime is 63569898961. The reversal of 63569898945 is 54989896536.

It is an interprime number because it is at equal distance from previous prime (63569898929) and next prime (63569898961).

It is not a de Polignac number, because 63569898945 - 2⁴ = 63569898929 is a prime.

It is a super-2 number, since 2×63569898945² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5304784 + ... + 5316753.

It is an arithmetic number, because the mean of its divisors is an integer number (2761599880).

Almost surely, 2^63569898945 is an apocalyptic number.

It is an amenable number.

63569898945 is an abundant number, since it is smaller than the sum of its proper divisors (68986895295).

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

63569898945 is a wasteful number, since it uses less digits than its factorization.

63569898945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621574 (or 10621571 counting only the distinct ones).

The product of its digits is 503884800, while the sum is 72.

The spelling of 63569898945 in words is "sixty-three billion, five hundred sixty-nine million, eight hundred ninety-eight thousand, nine hundred forty-five".