2145234023504 has 80 divisors (see below), whose sum is σ = 4883438064960. Its totient is φ = 900023470080.

The previous prime is 2145234023489. The next prime is 2145234023533. The reversal of 2145234023504 is 4053204325412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34052867 + ... + 34115805.

It is an arithmetic number, because the mean of its divisors is an integer number (61042975812).

Almost surely, 2^{2145234023504} is an apocalyptic number.

It is an amenable number.

2145234023504 is an abundant number, since it is smaller than the sum of its proper divisors (2738204041456).

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

2145234023504 is a wasteful number, since it uses less digits than its factorization.

2145234023504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77868 (or 77862 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 2145234023504 its reverse (4053204325412), we get a palindrome (6198438348916).

The spelling of 2145234023504 in words is "two trillion, one hundred forty-five billion, two hundred thirty-four million, twenty-three thousand, five hundred four".