2145501145164 has 48 divisors (see below), whose sum is σ = 5398757844480. Its totient is φ = 659236008000.

The previous prime is 2145501145159. The next prime is 2145501145171. The reversal of 2145501145164 is 4615411055412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9451962 + ... + 9676289.

It is an arithmetic number, because the mean of its divisors is an integer number (112474121760).

Almost surely, 2^{2145501145164} is an apocalyptic number.

It is an amenable number.

2145501145164 is an abundant number, since it is smaller than the sum of its proper divisors (3253256699316).

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

2145501145164 is a wasteful number, since it uses less digits than its factorization.

2145501145164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19128990 (or 19128988 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 2145501145164 in words is "two trillion, one hundred forty-five billion, five hundred one million, one hundred forty-five thousand, one hundred sixty-four".