11780730338520 has 256 divisors, whose sum is σ = 43963302458880. Its totient is φ = 2481173913600.

The previous prime is 11780730338513. The next prime is 11780730338551. The reversal of 11780730338520 is 2583303708711.

It is a self number, because there is not a number n which added to its sum of digits gives 11780730338520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19900126 + ... + 20483565.

It is an arithmetic number, because the mean of its divisors is an integer number (171731650230).

Almost surely, 2^{11780730338520} is an apocalyptic number.

11780730338520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11780730338520 is an abundant number, since it is smaller than the sum of its proper divisors (32182572120360).

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

11780730338520 is a wasteful number, since it uses less digits than its factorization.

11780730338520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40383746 (or 40383742 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 11780730338520 in words is "eleven trillion, seven hundred eighty billion, seven hundred thirty million, three hundred thirty-eight thousand, five hundred twenty".