15891982980 has 24 divisors (see below), whose sum is σ = 44497552512. Its totient is φ = 4237862112.

The previous prime is 15891982979. The next prime is 15891982987. The reversal of 15891982980 is 8928919851.

15891982980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 264866383 = 15891982980 / (1 + 5 + 8 + 9 + 1 + 9 + 8 + 2 + 9 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (15891982987) 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 7 ways as a sum of consecutive naturals, for example, 132433132 + ... + 132433251.

It is an arithmetic number, because the mean of its divisors is an integer number (1854064688).

Almost surely, 2^15891982980 is an apocalyptic number.

15891982980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15891982980 is an abundant number, since it is smaller than the sum of its proper divisors (28605569532).

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

15891982980 is a wasteful number, since it uses less digits than its factorization.

15891982980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264866395 (or 264866393 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 60.

The spelling of 15891982980 in words is "fifteen billion, eight hundred ninety-one million, nine hundred eighty-two thousand, nine hundred eighty".