64893292189 has 32 divisors (see below), whose sum is σ = 75562905600. Its totient is φ = 55110404160.

The previous prime is 64893292171. The next prime is 64893292193. The reversal of 64893292189 is 98129239846.

It is a cyclic number.

It is not a de Polignac number, because 64893292189 - 2¹⁵ = 64893259421 is a prime.

It is a super-2 number, since 2×64893292189² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64893292889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5138647 + ... + 5151259.

It is an arithmetic number, because the mean of its divisors is an integer number (2361340800).

Almost surely, 2^64893292189 is an apocalyptic number.

It is an amenable number.

64893292189 is a deficient number, since it is larger than the sum of its proper divisors (10669613411).

64893292189 is a wasteful number, since it uses less digits than its factorization.

64893292189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12985.

The product of its digits is 13436928, while the sum is 61.

The spelling of 64893292189 in words is "sixty-four billion, eight hundred ninety-three million, two hundred ninety-two thousand, one hundred eighty-nine".