64145612113 has 4 divisors (see below), whose sum is σ = 69977031408. Its totient is φ = 58314192820.

The previous prime is 64145612087. The next prime is 64145612119. The reversal of 64145612113 is 31121654146.

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 64145612113 - 2¹⁷ = 64145481041 is a prime.

It is a super-2 number, since 2×64145612113² (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 (64145612119) 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, 2915709631 + ... + 2915709652.

It is an arithmetic number, because the mean of its divisors is an integer number (17494257852).

Almost surely, 2^64145612113 is an apocalyptic number.

It is an amenable number.

64145612113 is a deficient number, since it is larger than the sum of its proper divisors (5831419295).

64145612113 is a wasteful number, since it uses less digits than its factorization.

64145612113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5831419294.

The product of its digits is 17280, while the sum is 34.

The spelling of 64145612113 in words is "sixty-four billion, one hundred forty-five million, six hundred twelve thousand, one hundred thirteen".