11782311790 has 16 divisors (see below), whose sum is σ = 21267243360. Its totient is φ = 4699795360.

The previous prime is 11782311769. The next prime is 11782311799. The reversal of 11782311790 is 9711328711.

It is a super-2 number, since 2×11782311790² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11782311799) 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, 1637401 + ... + 1644580.

It is an arithmetic number, because the mean of its divisors is an integer number (1329202710).

Almost surely, 2^11782311790 is an apocalyptic number.

11782311790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11782311790 is a deficient number, since it is larger than the sum of its proper divisors (9484931570).

11782311790 is a wasteful number, since it uses less digits than its factorization.

11782311790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282347.

The product of its (nonzero) digits is 21168, while the sum is 40.

The spelling of 11782311790 in words is "eleven billion, seven hundred eighty-two million, three hundred eleven thousand, seven hundred ninety".