2721156369 has 16 divisors (see below), whose sum is σ = 3704486400. Its totient is φ = 1776110336.

The previous prime is 2721156359. The next prime is 2721156407. The reversal of 2721156369 is 9636511272.

It is a cyclic number.

It is not a de Polignac number, because 2721156369 - 2⁵ = 2721156337 is a prime.

It is a super-2 number, since 2×2721156369² = 14809383969098528322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2721156369.

It is not an unprimeable number, because it can be changed into a prime (2721156329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58297 + ... + 94025.

It is an arithmetic number, because the mean of its divisors is an integer number (231530400).

Almost surely, 2^2721156369 is an apocalyptic number.

It is an amenable number.

2721156369 is a deficient number, since it is larger than the sum of its proper divisors (983330031).

2721156369 is a wasteful number, since it uses less digits than its factorization.

2721156369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36264.

The product of its digits is 136080, while the sum is 42.

The square root of 2721156369 is about 52164.7042453036. The cubic root of 2721156369 is about 1396.1041978871.

The spelling of 2721156369 in words is "two billion, seven hundred twenty-one million, one hundred fifty-six thousand, three hundred sixty-nine".