164850512478 has 32 divisors (see below), whose sum is σ = 362143008000. Its totient is φ = 49794662016.

The previous prime is 164850512471. The next prime is 164850512513. The reversal of 164850512478 is 874215058461.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164850512478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164850512471) 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, 31433403 + ... + 31438646.

It is an arithmetic number, because the mean of its divisors is an integer number (11316969000).

Almost surely, 2^164850512478 is an apocalyptic number.

164850512478 is an abundant number, since it is smaller than the sum of its proper divisors (197292495522).

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

164850512478 is a wasteful number, since it uses less digits than its factorization.

164850512478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62872096.

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 164850512478 in words is "one hundred sixty-four billion, eight hundred fifty million, five hundred twelve thousand, four hundred seventy-eight".