64188088069 has 8 divisors (see below), whose sum is σ = 74854913600. Its totient is φ = 55018360908.

The previous prime is 64188088061. The next prime is 64188088087. The reversal of 64188088069 is 96088088146.

It is not a de Polignac number, because 64188088069 - 2³ = 64188088061 is a prime.

It is a super-2 number, since 2×64188088069² (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 (64188088061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93568299 + ... + 93568984.

It is an arithmetic number, because the mean of its divisors is an integer number (9356864200).

Almost surely, 2^64188088069 is an apocalyptic number.

It is an amenable number.

64188088069 is a deficient number, since it is larger than the sum of its proper divisors (10666825531).

64188088069 is an equidigital number, since it uses as much as digits as its factorization.

64188088069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187137304 (or 187137290 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 58.

The spelling of 64188088069 in words is "sixty-four billion, one hundred eighty-eight million, eighty-eight thousand, sixty-nine".