64926799345 has 4 divisors (see below), whose sum is σ = 77912159220. Its totient is φ = 51941439472.

The previous prime is 64926799309. The next prime is 64926799367. The reversal of 64926799345 is 54399762946.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17136904464 + 47789894881 = 130908^2 + 218609^2 .

It is a cyclic number.

It is not a de Polignac number, because 64926799345 - 2¹¹ = 64926797297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6492679930 + ... + 6492679939.

It is an arithmetic number, because the mean of its divisors is an integer number (19478039805).

Almost surely, 2^64926799345 is an apocalyptic number.

It is an amenable number.

64926799345 is a deficient number, since it is larger than the sum of its proper divisors (12985359875).

64926799345 is a wasteful number, since it uses less digits than its factorization.

64926799345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985359874.

The product of its digits is 88179840, while the sum is 64.

The spelling of 64926799345 in words is "sixty-four billion, nine hundred twenty-six million, seven hundred ninety-nine thousand, three hundred forty-five".