64147113517 has 4 divisors (see below), whose sum is σ = 64190722816. Its totient is φ = 64103504220.

The previous prime is 64147113493. The next prime is 64147113521. The reversal of 64147113517 is 71531174146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64147113517 - 2¹⁵ = 64147080749 is a prime.

It is a super-2 number, since 2×64147113517² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64147113517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64147143517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21802443 + ... + 21805384.

It is an arithmetic number, because the mean of its divisors is an integer number (16047680704).

Almost surely, 2^64147113517 is an apocalyptic number.

It is an amenable number.

64147113517 is a deficient number, since it is larger than the sum of its proper divisors (43609299).

64147113517 is a wasteful number, since it uses less digits than its factorization.

64147113517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43609298.

The product of its digits is 70560, while the sum is 40.

The spelling of 64147113517 in words is "sixty-four billion, one hundred forty-seven million, one hundred thirteen thousand, five hundred seventeen".