2164332225140 has 24 divisors (see below), whose sum is σ = 4548907528200. Its totient is φ = 865007203328.

The previous prime is 2164332225119. The next prime is 2164332225173. The reversal of 2164332225140 is 415222334612.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 468367771876 + 1695964453264 = 684374^2 + 1302292^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2164332225140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45330965 + ... + 45378684.

It is an arithmetic number, because the mean of its divisors is an integer number (189537813675).

Almost surely, 2^{2164332225140} is an apocalyptic number.

2164332225140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2164332225140 is an abundant number, since it is smaller than the sum of its proper divisors (2384575303060).

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

2164332225140 is a wasteful number, since it uses less digits than its factorization.

2164332225140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90710851 (or 90710849 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 2164332225140 its reverse (415222334612), we get a palindrome (2579554559752).

The spelling of 2164332225140 in words is "two trillion, one hundred sixty-four billion, three hundred thirty-two million, two hundred twenty-five thousand, one hundred forty".