64172259463 has 8 divisors (see below), whose sum is σ = 69111228368. Its totient is φ = 59233667904.

The previous prime is 64172259449. The next prime is 64172259469. The reversal of 64172259463 is 36495227146.

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 64172259463 - 2²⁵ = 64138705031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64172259469) 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, 329395 + ... + 486667.

It is an arithmetic number, because the mean of its divisors is an integer number (8638903546).

Almost surely, 2^64172259463 is an apocalyptic number.

64172259463 is a deficient number, since it is larger than the sum of its proper divisors (4938968905).

64172259463 is a wasteful number, since it uses less digits than its factorization.

64172259463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188673.

The product of its digits is 2177280, while the sum is 49.

The spelling of 64172259463 in words is "sixty-four billion, one hundred seventy-two million, two hundred fifty-nine thousand, four hundred sixty-three".