21436516882 has 16 divisors (see below), whose sum is σ = 35106898752. Its totient is φ = 9735826320.

The previous prime is 21436516861. The next prime is 21436516939. The reversal of 21436516882 is 28861563412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374958 + ... + 428329.

It is an arithmetic number, because the mean of its divisors is an integer number (2194181172).

Almost surely, 2^21436516882 is an apocalyptic number.

21436516882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21436516882 is a deficient number, since it is larger than the sum of its proper divisors (13670381870).

21436516882 is a wasteful number, since it uses less digits than its factorization.

21436516882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804513.

The product of its digits is 552960, while the sum is 46.

The spelling of 21436516882 in words is "twenty-one billion, four hundred thirty-six million, five hundred sixteen thousand, eight hundred eighty-two".