21036188159 has 8 divisors (see below), whose sum is σ = 24224880768. Its totient is φ = 17893376280.

The previous prime is 21036188149. The next prime is 21036188209. The reversal of 21036188159 is 95188163012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21036188159 - 2¹² = 21036184063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21036188149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11469197 + ... + 11471030.

It is an arithmetic number, because the mean of its divisors is an integer number (3028110096).

Almost surely, 2^21036188159 is an apocalyptic number.

21036188159 is a deficient number, since it is larger than the sum of its proper divisors (3188692609).

21036188159 is a wasteful number, since it uses less digits than its factorization.

21036188159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22940365.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 21036188159 in words is "twenty-one billion, thirty-six million, one hundred eighty-eight thousand, one hundred fifty-nine".