11903817782 has 32 divisors (see below), whose sum is σ = 18727317504. Its totient is φ = 5668236000.

The previous prime is 11903817763. The next prime is 11903817811. The reversal of 11903817782 is 28771830911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1040063 + ... + 1051445.

It is an arithmetic number, because the mean of its divisors is an integer number (585228672).

Almost surely, 2^11903817782 is an apocalyptic number.

11903817782 is a deficient number, since it is larger than the sum of its proper divisors (6823499722).

11903817782 is a wasteful number, since it uses less digits than its factorization.

11903817782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11684.

The product of its (nonzero) digits is 169344, while the sum is 47.

The spelling of 11903817782 in words is "eleven billion, nine hundred three million, eight hundred seventeen thousand, seven hundred eighty-two".