64791000313 has 8 divisors (see below), whose sum is σ = 69997850888. Its totient is φ = 59615996544.

The previous prime is 64791000311. The next prime is 64791000319. The reversal of 64791000313 is 31300019746.

64791000313 = 179987² + 179988².

It can be written as a sum of positive squares in 4 ways, for example, as 6054084864 + 58736915449 = 77808^2 + 242357^2 .

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

It is not a de Polignac number, because 64791000313 - 2¹ = 64791000311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64791000311) 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, 7957470 + ... + 7965607.

It is an arithmetic number, because the mean of its divisors is an integer number (8749731361).

Almost surely, 2^64791000313 is an apocalyptic number.

64791000313 is the 179988-th centered square number.

It is an amenable number.

64791000313 is a deficient number, since it is larger than the sum of its proper divisors (5206850575).

64791000313 is a wasteful number, since it uses less digits than its factorization.

64791000313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15923403.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 64791000313 in words is "sixty-four billion, seven hundred ninety-one million, three hundred thirteen", and thus it is an aban number.