11889136623 has 64 divisors (see below), whose sum is σ = 19813498880. Its totient is φ = 6174548352.

The previous prime is 11889136621. The next prime is 11889136631. The reversal of 11889136623 is 32663198811.

It is not a de Polignac number, because 11889136623 - 2¹ = 11889136621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11889136621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4818036 + ... + 4820502.

It is an arithmetic number, because the mean of its divisors is an integer number (309585920).

Almost surely, 2^11889136623 is an apocalyptic number.

11889136623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11889136623 is a deficient number, since it is larger than the sum of its proper divisors (7924362257).

11889136623 is a wasteful number, since it uses less digits than its factorization.

11889136623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756.

The product of its digits is 373248, while the sum is 48.

The spelling of 11889136623 in words is "eleven billion, eight hundred eighty-nine million, one hundred thirty-six thousand, six hundred twenty-three".