64247356113 has 4 divisors (see below), whose sum is σ = 85663141488. Its totient is φ = 42831570740.

The previous prime is 64247356109. The next prime is 64247356133. The reversal of 64247356113 is 31165374246.

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 64247356113 - 2² = 64247356109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64247356133) 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, 10707892683 + ... + 10707892688.

It is an arithmetic number, because the mean of its divisors is an integer number (21415785372).

Almost surely, 2^64247356113 is an apocalyptic number.

It is an amenable number.

64247356113 is a deficient number, since it is larger than the sum of its proper divisors (21415785375).

64247356113 is a wasteful number, since it uses less digits than its factorization.

64247356113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415785374.

The product of its digits is 362880, while the sum is 42.

The spelling of 64247356113 in words is "sixty-four billion, two hundred forty-seven million, three hundred fifty-six thousand, one hundred thirteen".