2155411569424 has 15 divisors (see below), whose sum is σ = 4176121293813. Its totient is φ = 1077702848448.

The previous prime is 2155411569419. The next prime is 2155411569499. The reversal of 2155411569424 is 4249651145512.

The square root of 2155411569424 is 1468132.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 647348976400 + 1508062593024 = 804580^2 + 1228032^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5689012 + ... + 6056044.

Almost surely, 2^{2155411569424} is an apocalyptic number.

2155411569424 is the 1468132-nd square number.

It is an amenable number.

2155411569424 is a deficient number, since it is larger than the sum of its proper divisors (2020709724389).

2155411569424 is an frugal number, since it uses more digits than its factorization.

2155411569424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734074 (or 367035 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

Multiplying 2155411569424 by its sum of digits (49), we get a square (105615166901776 = 10276924²).

The spelling of 2155411569424 in words is "two trillion, one hundred fifty-five billion, four hundred eleven million, five hundred sixty-nine thousand, four hundred twenty-four".