64170887623 has 8 divisors (see below), whose sum is σ = 66896770176. Its totient is φ = 61485996000.

The previous prime is 64170887611. The next prime is 64170887629. The reversal of 64170887623 is 32678807146.

64170887623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64170887623 - 2⁵ = 64170887591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64170887629) 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, 10244536 + ... + 10250797.

It is an arithmetic number, because the mean of its divisors is an integer number (8362096272).

Almost surely, 2^64170887623 is an apocalyptic number.

64170887623 is a deficient number, since it is larger than the sum of its proper divisors (2725882553).

64170887623 is a wasteful number, since it uses less digits than its factorization.

64170887623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20495465.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 64170887623 in words is "sixty-four billion, one hundred seventy million, eight hundred eighty-seven thousand, six hundred twenty-three".