11949923580 has 48 divisors (see below), whose sum is σ = 38239756800. Its totient is φ = 2731411008.

The previous prime is 11949923561. The next prime is 11949923581. The reversal of 11949923580 is 8532994911.

11949923580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11949923581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14225680 + ... + 14226519.

It is an arithmetic number, because the mean of its divisors is an integer number (796661600).

Almost surely, 2^11949923580 is an apocalyptic number.

11949923580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11949923580 is an abundant number, since it is smaller than the sum of its proper divisors (26289833220).

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

11949923580 is a wasteful number, since it uses less digits than its factorization.

11949923580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28452218 (or 28452216 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The spelling of 11949923580 in words is "eleven billion, nine hundred forty-nine million, nine hundred twenty-three thousand, five hundred eighty".