64907665373 has 8 divisors (see below), whose sum is σ = 66030984696. Its totient is φ = 63790675200.

The previous prime is 64907665369. The next prime is 64907665393. The reversal of 64907665373 is 37356670946.

It can be written as a sum of positive squares in 4 ways, for example, as 3422016004 + 61485649369 = 58498^2 + 247963^2 .

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 64907665373 - 2² = 64907665369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64907665393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561598 + ... + 1602623.

It is an arithmetic number, because the mean of its divisors is an integer number (8253873087).

Almost surely, 2^64907665373 is an apocalyptic number.

It is an amenable number.

64907665373 is a deficient number, since it is larger than the sum of its proper divisors (1123319323).

64907665373 is a wasteful number, since it uses less digits than its factorization.

64907665373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164575.

The product of its (nonzero) digits is 17146080, while the sum is 56.

The spelling of 64907665373 in words is "sixty-four billion, nine hundred seven million, six hundred sixty-five thousand, three hundred seventy-three".