64180662389 has 16 divisors (see below), whose sum is σ = 66151650048. Its totient is φ = 62222478912.

The previous prime is 64180662379. The next prime is 64180662391. The reversal of 64180662389 is 98326608146.

It is a cyclic number.

It is not a de Polignac number, because 64180662389 - 2¹² = 64180658293 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64180662389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64180662379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19196852 + ... + 19200194.

It is an arithmetic number, because the mean of its divisors is an integer number (4134478128).

Almost surely, 2^64180662389 is an apocalyptic number.

It is an amenable number.

64180662389 is a deficient number, since it is larger than the sum of its proper divisors (1970987659).

64180662389 is a wasteful number, since it uses less digits than its factorization.

64180662389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 64180662389 in words is "sixty-four billion, one hundred eighty million, six hundred sixty-two thousand, three hundred eighty-nine".