11155400297 has 4 divisors (see below), whose sum is σ = 11155734660. Its totient is φ = 11155065936.

The previous prime is 11155400281. The next prime is 11155400299. The reversal of 11155400297 is 79200455111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79200455111 = 11059 ⋅7161629.

It can be written as a sum of positive squares in 2 ways, for example, as 8008639081 + 3146761216 = 89491^2 + 56096^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155400297 - 2⁴ = 11155400281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155400299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110798 + ... + 185975.

It is an arithmetic number, because the mean of its divisors is an integer number (2788933665).

Almost surely, 2^11155400297 is an apocalyptic number.

It is an amenable number.

11155400297 is a deficient number, since it is larger than the sum of its proper divisors (334363).

11155400297 is an equidigital number, since it uses as much as digits as its factorization.

11155400297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334362.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 11155400297 in words is "eleven billion, one hundred fifty-five million, four hundred thousand, two hundred ninety-seven".