64699984134 has 48 divisors (see below), whose sum is σ = 141677233152. Its totient is φ = 21338016624.

The previous prime is 64699984121. The next prime is 64699984163. The reversal of 64699984134 is 43148999646.

64699984134 is a `hidden beast` number, since 6 + 46 + 99 + 98 + 413 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604839 + ... + 703725.

It is an arithmetic number, because the mean of its divisors is an integer number (2951609024).

Almost surely, 2^64699984134 is an apocalyptic number.

64699984134 is an abundant number, since it is smaller than the sum of its proper divisors (76977249018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64699984134 is a wasteful number, since it uses less digits than its factorization.

64699984134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99281 (or 99278 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 63.

The spelling of 64699984134 in words is "sixty-four billion, six hundred ninety-nine million, nine hundred eighty-four thousand, one hundred thirty-four".