11771841830 has 48 divisors (see below), whose sum is σ = 25720506720. Its totient is φ = 3860575488.

The previous prime is 11771841821. The next prime is 11771841833. The reversal of 11771841830 is 3814817711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11771841833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510995 + ... + 533534.

It is an arithmetic number, because the mean of its divisors is an integer number (535843890).

Almost surely, 2^11771841830 is an apocalyptic number.

11771841830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11771841830 is an abundant number, since it is smaller than the sum of its proper divisors (13948664890).

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

11771841830 is a wasteful number, since it uses less digits than its factorization.

11771841830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044573 (or 1044566 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 41.

The spelling of 11771841830 in words is "eleven billion, seven hundred seventy-one million, eight hundred forty-one thousand, eight hundred thirty".