20282050861 has 4 divisors (see below), whose sum is σ = 20346032412. Its totient is φ = 20218069312.

The previous prime is 20282050819. The next prime is 20282050883. The reversal of 20282050861 is 16805028202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4611768100 + 15670282761 = 67910^2 + 125181^2 .

It is a cyclic number.

It is not a de Polignac number, because 20282050861 - 2¹⁵ = 20282018093 is a prime.

It is a super-2 number, since 2×20282050861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20282050801) 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, 31990300 + ... + 31990933.

It is an arithmetic number, because the mean of its divisors is an integer number (5086508103).

Almost surely, 2^20282050861 is an apocalyptic number.

It is an amenable number.

20282050861 is a deficient number, since it is larger than the sum of its proper divisors (63981551).

20282050861 is an equidigital number, since it uses as much as digits as its factorization.

20282050861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63981550.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 20282050861 in words is "twenty billion, two hundred eighty-two million, fifty thousand, eight hundred sixty-one".