11810989839 has 16 divisors (see below), whose sum is σ = 17372655360. Its totient is φ = 7077744960.

The previous prime is 11810989823. The next prime is 11810989859. The reversal of 11810989839 is 93898901811.

It is not a de Polignac number, because 11810989839 - 2⁴ = 11810989823 is a prime.

It is a super-2 number, since 2×11810989839² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11810989859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2007787 + ... + 2013660.

It is an arithmetic number, because the mean of its divisors is an integer number (1085790960).

Almost surely, 2^11810989839 is an apocalyptic number.

11810989839 is a deficient number, since it is larger than the sum of its proper divisors (5561665521).

11810989839 is a wasteful number, since it uses less digits than its factorization.

11810989839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021550.

The product of its (nonzero) digits is 1119744, while the sum is 57.

The spelling of 11810989839 in words is "eleven billion, eight hundred ten million, nine hundred eighty-nine thousand, eight hundred thirty-nine".