64136430682 has 8 divisors (see below), whose sum is σ = 99522047700. Its totient is φ = 30962414784.

The previous prime is 64136430637. The next prime is 64136430713. The reversal of 64136430682 is 28603463146.

It can be written as a sum of positive squares in 2 ways, for example, as 62499500001 + 1636930681 = 249999^2 + 40459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×64136430682² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 552900207 + ... + 552900322.

Almost surely, 2^64136430682 is an apocalyptic number.

64136430682 is a deficient number, since it is larger than the sum of its proper divisors (35385617018).

64136430682 is a wasteful number, since it uses less digits than its factorization.

64136430682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105800560.

The product of its (nonzero) digits is 497664, while the sum is 43.

The spelling of 64136430682 in words is "sixty-four billion, one hundred thirty-six million, four hundred thirty thousand, six hundred eighty-two".