21039006159 has 24 divisors (see below), whose sum is σ = 32168719440. Its totient is φ = 13227403392.

The previous prime is 21039006097. The next prime is 21039006161. The reversal of 21039006159 is 95160093012.

21039006159 is a `hidden beast` number, since 2 + 1 + 0 + 39 + 0 + 0 + 615 + 9 = 666.

It is not a de Polignac number, because 21039006159 - 2¹¹ = 21039004111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21039006169) 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 23 ways as a sum of consecutive naturals, for example, 926094 + ... + 948539.

It is an arithmetic number, because the mean of its divisors is an integer number (1340363310).

Almost surely, 2^21039006159 is an apocalyptic number.

21039006159 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21039006159 is a deficient number, since it is larger than the sum of its proper divisors (11129713281).

21039006159 is a wasteful number, since it uses less digits than its factorization.

21039006159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874711 (or 1874708 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The spelling of 21039006159 in words is "twenty-one billion, thirty-nine million, six thousand, one hundred fifty-nine".