20659883995 has 8 divisors (see below), whose sum is σ = 25090558416. Its totient is φ = 16328775456.

The previous prime is 20659883977. The next prime is 20659884019. The reversal of 20659883995 is 59938895602.

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 20659883995 - 2²⁷ = 20525666267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24891012 + ... + 24891841.

It is an arithmetic number, because the mean of its divisors is an integer number (3136319802).

Almost surely, 2^20659883995 is an apocalyptic number.

20659883995 is a deficient number, since it is larger than the sum of its proper divisors (4430674421).

20659883995 is an equidigital number, since it uses as much as digits as its factorization.

20659883995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49782941.

The product of its (nonzero) digits is 41990400, while the sum is 64.

The spelling of 20659883995 in words is "twenty billion, six hundred fifty-nine million, eight hundred eighty-three thousand, nine hundred ninety-five".