11856431093 has 12 divisors (see below), whose sum is σ = 12851167680. Its totient is φ = 10933702416.

The previous prime is 11856431063. The next prime is 11856431099. The reversal of 11856431093 is 39013465811.

It is not a de Polignac number, because 11856431093 - 2¹⁴ = 11856414709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11856431093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11856431099) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 141830 + ... + 209352.

It is an arithmetic number, because the mean of its divisors is an integer number (1070930640).

Almost surely, 2^11856431093 is an apocalyptic number.

11856431093 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11856431093 is a deficient number, since it is larger than the sum of its proper divisors (994736587).

11856431093 is a wasteful number, since it uses less digits than its factorization.

11856431093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68588 (or 68575 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 11856431093 in words is "eleven billion, eight hundred fifty-six million, four hundred thirty-one thousand, ninety-three".