11989655139 has 96 divisors (see below), whose sum is σ = 21823406080. Its totient is φ = 5709528000.

The previous prime is 11989655129. The next prime is 11989655141. The reversal of 11989655139 is 93155698911.

It is not a de Polignac number, because 11989655139 - 2⁷ = 11989655011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (11989655129) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1492644 + ... + 1500654.

Almost surely, 2^11989655139 is an apocalyptic number.

11989655139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11989655139 is a deficient number, since it is larger than the sum of its proper divisors (9833750941).

11989655139 is a wasteful number, since it uses less digits than its factorization.

11989655139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8093 (or 8082 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 57.

The spelling of 11989655139 in words is "eleven billion, nine hundred eighty-nine million, six hundred fifty-five thousand, one hundred thirty-nine".