11719721480 has 16 divisors (see below), whose sum is σ = 26369373420. Its totient is φ = 4687888576.

The previous prime is 11719721479. The next prime is 11719721543. The reversal of 11719721480 is 8412791711.

It can be written as a sum of positive squares in 2 ways, for example, as 9408612004 + 2311109476 = 96998^2 + 48074^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146496479 + ... + 146496558.

Almost surely, 2^11719721480 is an apocalyptic number.

11719721480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11719721480 is an abundant number, since it is smaller than the sum of its proper divisors (14649651940).

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

11719721480 is a wasteful number, since it uses less digits than its factorization.

11719721480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292993048 (or 292993044 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 41.

The spelling of 11719721480 in words is "eleven billion, seven hundred nineteen million, seven hundred twenty-one thousand, four hundred eighty".