11857249880 has 64 divisors (see below), whose sum is σ = 30500712000. Its totient is φ = 4063924224.

The previous prime is 11857249841. The next prime is 11857249907. The reversal of 11857249880 is 8894275811.

11857249880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 108891²-1.

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 15 ways as a sum of consecutive naturals, for example, 1083476 + ... + 1094364.

It is an arithmetic number, because the mean of its divisors is an integer number (476573625).

Almost surely, 2^11857249880 is an apocalyptic number.

11857249880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11857249880 is an abundant number, since it is smaller than the sum of its proper divisors (18643462120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11857249880 is a wasteful number, since it uses less digits than its factorization.

11857249880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14796 (or 14792 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 11857249880 in words is "eleven billion, eight hundred fifty-seven million, two hundred forty-nine thousand, eight hundred eighty".