11387085497 has 4 divisors (see below), whose sum is σ = 11387477376. Its totient is φ = 11386693620.

The previous prime is 11387085487. The next prime is 11387085511. The reversal of 11387085497 is 79458078311.

11387085497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11387085497 - 2¹⁰ = 11387084473 is a prime.

It is a super-2 number, since 2×11387085497² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11387085407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148529 + ... + 211742.

It is an arithmetic number, because the mean of its divisors is an integer number (2846869344).

Almost surely, 2^11387085497 is an apocalyptic number.

It is an amenable number.

11387085497 is a deficient number, since it is larger than the sum of its proper divisors (391879).

11387085497 is an equidigital number, since it uses as much as digits as its factorization.

11387085497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391878.

The product of its (nonzero) digits is 1693440, while the sum is 53.

The spelling of 11387085497 in words is "eleven billion, three hundred eighty-seven million, eighty-five thousand, four hundred ninety-seven".