20659499229 has 8 divisors (see below), whose sum is σ = 28434579712. Its totient is φ = 13328709120.

The previous prime is 20659499213. The next prime is 20659499233. The reversal of 20659499229 is 92299495602.

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

It is not a de Polignac number, because 20659499229 - 2⁴ = 20659499213 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 (20659499209) 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, 111072484 + ... + 111072669.

It is an arithmetic number, because the mean of its divisors is an integer number (3554322464).

Almost surely, 2^20659499229 is an apocalyptic number.

It is an amenable number.

20659499229 is a deficient number, since it is larger than the sum of its proper divisors (7775080483).

20659499229 is a wasteful number, since it uses less digits than its factorization.

20659499229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222145187.

The product of its (nonzero) digits is 6298560, while the sum is 57.

The spelling of 20659499229 in words is "twenty billion, six hundred fifty-nine million, four hundred ninety-nine thousand, two hundred twenty-nine".