164454625615615 has 8 divisors (see below), whose sum is σ = 197346222956880. Its totient is φ = 131563252347072.

The previous prime is 164454625615613. The next prime is 164454625615661. The reversal of 164454625615615 is 516516526454461.

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 164454625615615 - 2¹ = 164454625615613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164454625615613) 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, 54399270 + ... + 57342739.

It is an arithmetic number, because the mean of its divisors is an integer number (24668277869610).

Almost surely, 2^{164454625615615} is an apocalyptic number.

164454625615615 is a deficient number, since it is larger than the sum of its proper divisors (32891597341265).

164454625615615 is a wasteful number, since it uses less digits than its factorization.

164454625615615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112036361.

The product of its digits is 103680000, while the sum is 61.

The spelling of 164454625615615 in words is "one hundred sixty-four trillion, four hundred fifty-four billion, six hundred twenty-five million, six hundred fifteen thousand, six hundred fifteen".