20853287862299 has 4 divisors (see below), whose sum is σ = 21012473265960. Its totient is φ = 20694102458640.

The previous prime is 20853287862263. The next prime is 20853287862301. The reversal of 20853287862299 is 99226878235802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20853287862299 - 2¹⁶ = 20853287796763 is a prime.

It is a super-2 number, since 2×20853287862299² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20853287862259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79592701634 + ... + 79592701895.

It is an arithmetic number, because the mean of its divisors is an integer number (5253118316490).

Almost surely, 2^{20853287862299} is an apocalyptic number.

20853287862299 is a deficient number, since it is larger than the sum of its proper divisors (159185403661).

20853287862299 is a wasteful number, since it uses less digits than its factorization.

20853287862299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159185403660.

The product of its (nonzero) digits is 418037760, while the sum is 71.

The spelling of 20853287862299 in words is "twenty trillion, eight hundred fifty-three billion, two hundred eighty-seven million, eight hundred sixty-two thousand, two hundred ninety-nine".