11903090780 has 72 divisors (see below), whose sum is σ = 29146049856. Its totient is φ = 4071446400.

The previous prime is 11903090779. The next prime is 11903090783. The reversal of 11903090780 is 8709030911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11903090783) 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, 408290 + ... + 436470.

It is an arithmetic number, because the mean of its divisors is an integer number (404806248).

Almost surely, 2^11903090780 is an apocalyptic number.

11903090780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11903090780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14573024928).

11903090780 is an abundant number, since it is smaller than the sum of its proper divisors (17242959076).

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

11903090780 is a wasteful number, since it uses less digits than its factorization.

11903090780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28635 (or 28626 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The spelling of 11903090780 in words is "eleven billion, nine hundred three million, ninety thousand, seven hundred eighty".