11289097987 has 2 divisors, whose sum is σ = 11289097988. Its totient is φ = 11289097986.

The previous prime is 11289097957. The next prime is 11289097993. The reversal of 11289097987 is 78979098211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11289097987 - 2²³ = 11280709379 is a prime.

It is not a weakly prime, because it can be changed into another prime (11289097927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5644548993 + 5644548994.

It is an arithmetic number, because the mean of its divisors is an integer number (5644548994).

Almost surely, 2^11289097987 is an apocalyptic number.

11289097987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11289097987 is an equidigital number, since it uses as much as digits as its factorization.

11289097987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 61.

The spelling of 11289097987 in words is "eleven billion, two hundred eighty-nine million, ninety-seven thousand, nine hundred eighty-seven".