64699876835 has 16 divisors (see below), whose sum is σ = 84734836992. Its totient is φ = 47034002400.

The previous prime is 64699876817. The next prime is 64699876867. The reversal of 64699876835 is 53867899646.

64699876835 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64699876835 - 2¹⁶ = 64699811299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127409 + ... + 381618.

It is an arithmetic number, because the mean of its divisors is an integer number (5295927312).

Almost surely, 2^64699876835 is an apocalyptic number.

64699876835 is a deficient number, since it is larger than the sum of its proper divisors (20034960157).

64699876835 is a wasteful number, since it uses less digits than its factorization.

64699876835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511354.

The product of its digits is 470292480, while the sum is 71.

The spelling of 64699876835 in words is "sixty-four billion, six hundred ninety-nine million, eight hundred seventy-six thousand, eight hundred thirty-five".