64124614621 has 4 divisors (see below), whose sum is σ = 64231668000. Its totient is φ = 64017561244.

The previous prime is 64124614613. The next prime is 64124614633. The reversal of 64124614621 is 12641642146.

It is a happy number.

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 64124614621 - 2³ = 64124614613 is a prime.

It is a super-2 number, since 2×64124614621² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64124614681) 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, 53525791 + ... + 53526988.

It is an arithmetic number, because the mean of its divisors is an integer number (16057917000).

Almost surely, 2^64124614621 is an apocalyptic number.

It is an amenable number.

64124614621 is a deficient number, since it is larger than the sum of its proper divisors (107053379).

64124614621 is a wasteful number, since it uses less digits than its factorization.

64124614621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107053378.

The product of its digits is 55296, while the sum is 37.

The spelling of 64124614621 in words is "sixty-four billion, one hundred twenty-four million, six hundred fourteen thousand, six hundred twenty-one".