11720916280 has 32 divisors (see below), whose sum is σ = 26409745440. Its totient is φ = 4681667200.

The previous prime is 11720916227. The next prime is 11720916313. The reversal of 11720916280 is 8261902711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180964 + ... + 237043.

It is an arithmetic number, because the mean of its divisors is an integer number (825304545).

Almost surely, 2^11720916280 is an apocalyptic number.

11720916280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11720916280 is an abundant number, since it is smaller than the sum of its proper divisors (14688829160).

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

11720916280 is a wasteful number, since it uses less digits than its factorization.

11720916280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418719 (or 418715 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 11720916280 in words is "eleven billion, seven hundred twenty million, nine hundred sixteen thousand, two hundred eighty".