64430913613 has 8 divisors (see below), whose sum is σ = 70297207200. Its totient is φ = 58566109680.

The previous prime is 64430913607. The next prime is 64430913619. The reversal of 64430913613 is 31631903446.

It is an interprime number because it is at equal distance from previous prime (64430913607) and next prime (64430913619).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64430913613 - 2⁹ = 64430913101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64430913619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280995 + ... + 455872.

It is an arithmetic number, because the mean of its divisors is an integer number (8787150900).

Almost surely, 2^64430913613 is an apocalyptic number.

It is an amenable number.

64430913613 is a deficient number, since it is larger than the sum of its proper divisors (5866293587).

64430913613 is a wasteful number, since it uses less digits than its factorization.

64430913613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744827.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 64430913613 in words is "sixty-four billion, four hundred thirty million, nine hundred thirteen thousand, six hundred thirteen".