64624992093 has 12 divisors (see below), whose sum is σ = 93352720188. Its totient is φ = 43080785280.

The previous prime is 64624992077. The next prime is 64624992121. The reversal of 64624992093 is 39029942646.

64624992093 is a `hidden beast` number, since 6 + 4 + 62 + 499 + 2 + 0 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18187759044 + 46437233049 = 134862^2 + 215493^2 .

It is not a de Polignac number, because 64624992093 - 2⁴ = 64624992077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64624993093) 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 11 ways as a sum of consecutive naturals, for example, 43930 + ... + 362187.

It is an arithmetic number, because the mean of its divisors is an integer number (7779393349).

Almost surely, 2^64624992093 is an apocalyptic number.

It is an amenable number.

64624992093 is a deficient number, since it is larger than the sum of its proper divisors (28727728095).

64624992093 is a wasteful number, since it uses less digits than its factorization.

64624992093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423804 (or 423801 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 64624992093 in words is "sixty-four billion, six hundred twenty-four million, nine hundred ninety-two thousand, ninety-three".