11231327985 has 32 divisors (see below), whose sum is σ = 18479688192. Its totient is φ = 5820606720.

The previous prime is 11231327951. The next prime is 11231327999. The reversal of 11231327985 is 58972313211.

It is not a de Polignac number, because 11231327985 - 2¹³ = 11231319793 is a prime.

It is a super-2 number, since 2×11231327985² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429640 + ... + 455030.

It is an arithmetic number, because the mean of its divisors is an integer number (577490256).

Almost surely, 2^11231327985 is an apocalyptic number.

11231327985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11231327985 is a deficient number, since it is larger than the sum of its proper divisors (7248360207).

11231327985 is a wasteful number, since it uses less digits than its factorization.

11231327985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26233.

The product of its digits is 90720, while the sum is 42.

The spelling of 11231327985 in words is "eleven billion, two hundred thirty-one million, three hundred twenty-seven thousand, nine hundred eighty-five".