10999585812 has 24 divisors (see below), whose sum is σ = 25672967712. Its totient is φ = 3665490400.

The previous prime is 10999585799. The next prime is 10999585813. The reversal of 10999585812 is 21858599901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10999585813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85014 + ... + 170957.

It is an arithmetic number, because the mean of its divisors is an integer number (1069706988).

Almost surely, 2^10999585812 is an apocalyptic number.

10999585812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10999585812 is an abundant number, since it is smaller than the sum of its proper divisors (14673381900).

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

10999585812 is a wasteful number, since it uses less digits than its factorization.

10999585812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259559 (or 259557 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 57.

The spelling of 10999585812 in words is "ten billion, nine hundred ninety-nine million, five hundred eighty-five thousand, eight hundred twelve".