11907215885 has 4 divisors (see below), whose sum is σ = 14288659068. Its totient is φ = 9525772704.

The previous prime is 11907215809. The next prime is 11907215899. The reversal of 11907215885 is 58851270911.

11907215885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2966000521 + 8941215364 = 54461^2 + 94558^2 .

It is a cyclic number.

It is not a de Polignac number, because 11907215885 - 2⁸ = 11907215629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1190721584 + ... + 1190721593.

It is an arithmetic number, because the mean of its divisors is an integer number (3572164767).

Almost surely, 2^11907215885 is an apocalyptic number.

It is an amenable number.

11907215885 is a deficient number, since it is larger than the sum of its proper divisors (2381443183).

11907215885 is an equidigital number, since it uses as much as digits as its factorization.

11907215885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381443182.

The product of its (nonzero) digits is 201600, while the sum is 47.

The spelling of 11907215885 in words is "eleven billion, nine hundred seven million, two hundred fifteen thousand, eight hundred eighty-five".