11372820399 has 24 divisors (see below), whose sum is σ = 16668647424. Its totient is φ = 7470666000.

The previous prime is 11372820391. The next prime is 11372820421. The reversal of 11372820399 is 99302827311.

11372820399 is a `hidden beast` number, since 113 + 72 + 82 + 0 + 399 = 666.

It is not a de Polignac number, because 11372820399 - 2³ = 11372820391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11372820391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1344714 + ... + 1353144.

It is an arithmetic number, because the mean of its divisors is an integer number (694526976).

Almost surely, 2^11372820399 is an apocalyptic number.

11372820399 is a deficient number, since it is larger than the sum of its proper divisors (5295827025).

11372820399 is a wasteful number, since it uses less digits than its factorization.

11372820399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10619 (or 10616 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 11372820399 in words is "eleven billion, three hundred seventy-two million, eight hundred twenty thousand, three hundred ninety-nine".