20868353495 has 16 divisors (see below), whose sum is σ = 27415124352. Its totient is φ = 15123344160.

The previous prime is 20868353479. The next prime is 20868353501. The reversal of 20868353495 is 59435386802.

It is not a de Polignac number, because 20868353495 - 2⁴ = 20868353479 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 654797 + ... + 685926.

It is an arithmetic number, because the mean of its divisors is an integer number (1713445272).

Almost surely, 2^20868353495 is an apocalyptic number.

20868353495 is a deficient number, since it is larger than the sum of its proper divisors (6546770857).

20868353495 is a wasteful number, since it uses less digits than its factorization.

20868353495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341022.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 20868353495 in words is "twenty billion, eight hundred sixty-eight million, three hundred fifty-three thousand, four hundred ninety-five".