2145154523344 has 40 divisors (see below), whose sum is σ = 4839607388160. Its totient is φ = 902005673088.

The previous prime is 2145154523329. The next prime is 2145154523363. The reversal of 2145154523344 is 4433254515412.

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 2145154523344.

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, 180684304 + ... + 180696175.

It is an arithmetic number, because the mean of its divisors is an integer number (120990184704).

Almost surely, 2^{2145154523344} is an apocalyptic number.

It is an amenable number.

2145154523344 is an abundant number, since it is smaller than the sum of its proper divisors (2694452864816).

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

2145154523344 is a wasteful number, since it uses less digits than its factorization.

2145154523344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361380547 (or 361380541 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 43.

The spelling of 2145154523344 in words is "two trillion, one hundred forty-five billion, one hundred fifty-four million, five hundred twenty-three thousand, three hundred forty-four".