164500493478 has 32 divisors (see below), whose sum is σ = 337051622880. Its totient is φ = 53491933440.

The previous prime is 164500493477. The next prime is 164500493483. The reversal of 164500493478 is 874394005461.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 164500493478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164500493477) 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, 5690076 + ... + 5718912.

It is an arithmetic number, because the mean of its divisors is an integer number (10532863215).

Almost surely, 2^164500493478 is an apocalyptic number.

164500493478 is an abundant number, since it is smaller than the sum of its proper divisors (172551129402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164500493478 is a wasteful number, since it uses less digits than its factorization.

164500493478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52072.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 164500493478 in words is "one hundred sixty-four billion, five hundred million, four hundred ninety-three thousand, four hundred seventy-eight".