20659242415 has 16 divisors (see below), whose sum is σ = 28340873280. Its totient is φ = 14162238720.

The previous prime is 20659242397. The next prime is 20659242419. The reversal of 20659242415 is 51424295602.

It is not a de Polignac number, because 20659242415 - 2⁹ = 20659241903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20659242419) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39885 + ... + 207145.

It is an arithmetic number, because the mean of its divisors is an integer number (1771304580).

Almost surely, 2^20659242415 is an apocalyptic number.

20659242415 is a deficient number, since it is larger than the sum of its proper divisors (7681630865).

20659242415 is a wasteful number, since it uses less digits than its factorization.

20659242415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170802.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 20659242415 in words is "twenty billion, six hundred fifty-nine million, two hundred forty-two thousand, four hundred fifteen".