21682299158 has 16 divisors (see below), whose sum is σ = 35770472640. Its totient is φ = 9794294976.

The previous prime is 21682299139. The next prime is 21682299161. The reversal of 21682299158 is 85199228612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8870423 + ... + 8872866.

It is an arithmetic number, because the mean of its divisors is an integer number (2235654540).

Almost surely, 2^21682299158 is an apocalyptic number.

21682299158 is a deficient number, since it is larger than the sum of its proper divisors (14088173482).

21682299158 is a wasteful number, since it uses less digits than its factorization.

21682299158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17743351.

The product of its digits is 1244160, while the sum is 53.

The spelling of 21682299158 in words is "twenty-one billion, six hundred eighty-two million, two hundred ninety-nine thousand, one hundred fifty-eight".