11987090829 has 128 divisors (see below), whose sum is σ = 21405081600. Its totient is φ = 6488501760.

The previous prime is 11987090807. The next prime is 11987090839. The reversal of 11987090829 is 92809078911.

It is not a de Polignac number, because 11987090829 - 2⁹ = 11987090317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11987090839) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 71778904 + ... + 71779070.

It is an arithmetic number, because the mean of its divisors is an integer number (167227200).

Almost surely, 2^11987090829 is an apocalyptic number.

It is an amenable number.

11987090829 is a deficient number, since it is larger than the sum of its proper divisors (9417990771).

11987090829 is a wasteful number, since it uses less digits than its factorization.

11987090829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 54.

The spelling of 11987090829 in words is "eleven billion, nine hundred eighty-seven million, ninety thousand, eight hundred twenty-nine".