11903817786 has 48 divisors (see below), whose sum is σ = 27293415744. Its totient is φ = 3390536448.

The previous prime is 11903817763. The next prime is 11903817811. The reversal of 11903817786 is 68771830911.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6354546 + ... + 6356418.

It is an arithmetic number, because the mean of its divisors is an integer number (568612828).

Almost surely, 2^11903817786 is an apocalyptic number.

11903817786 is an abundant number, since it is smaller than the sum of its proper divisors (15389597958).

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

11903817786 is an equidigital number, since it uses as much as digits as its factorization.

11903817786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2274 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 51.

The spelling of 11903817786 in words is "eleven billion, nine hundred three million, eight hundred seventeen thousand, seven hundred eighty-six".