64634915241 has 24 divisors (see below), whose sum is σ = 100664928000. Its totient is φ = 39727177056.

The previous prime is 64634915171. The next prime is 64634915273. The reversal of 64634915241 is 14251943646.

64634915241 is a `hidden beast` number, since 6 + 4 + 6 + 34 + 91 + 524 + 1 = 666.

It is not a de Polignac number, because 64634915241 - 2²⁵ = 64601360809 is a prime.

It is a super-2 number, since 2×64634915241² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64634915291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237241 + ... + 430758.

It is an arithmetic number, because the mean of its divisors is an integer number (4194372000).

Almost surely, 2^64634915241 is an apocalyptic number.

It is an amenable number.

64634915241 is a deficient number, since it is larger than the sum of its proper divisors (36030012759).

64634915241 is a wasteful number, since it uses less digits than its factorization.

64634915241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668845 (or 668842 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 64634915241 in words is "sixty-four billion, six hundred thirty-four million, nine hundred fifteen thousand, two hundred forty-one".