11172232987 has 2 divisors, whose sum is σ = 11172232988. Its totient is φ = 11172232986.

The previous prime is 11172232963. The next prime is 11172232993. The reversal of 11172232987 is 78923227111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11172232987 - 2¹¹ = 11172230939 is a prime.

It is not a weakly prime, because it can be changed into another prime (11172232087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586116493 + 5586116494.

It is an arithmetic number, because the mean of its divisors is an integer number (5586116494).

Almost surely, 2^11172232987 is an apocalyptic number.

11172232987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11172232987 is an equidigital number, since it uses as much as digits as its factorization.

11172232987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The spelling of 11172232987 in words is "eleven billion, one hundred seventy-two million, two hundred thirty-two thousand, nine hundred eighty-seven".