11988777529 has 16 divisors (see below), whose sum is σ = 13104967680. Its totient is φ = 10925502480.

The previous prime is 11988777523. The next prime is 11988777533. The reversal of 11988777529 is 92577788911.

11988777529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11988777529 - 2²³ = 11980388921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11988777523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37422 + ... + 159304.

It is an arithmetic number, because the mean of its divisors is an integer number (819060480).

Almost surely, 2^11988777529 is an apocalyptic number.

11988777529 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11988777529 is a deficient number, since it is larger than the sum of its proper divisors (1116190151).

11988777529 is a wasteful number, since it uses less digits than its factorization.

11988777529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122100.

The product of its digits is 17781120, while the sum is 64.

The spelling of 11988777529 in words is "eleven billion, nine hundred eighty-eight million, seven hundred seventy-seven thousand, five hundred twenty-nine".