20657848283 has 4 divisors (see below), whose sum is σ = 20658208848. Its totient is φ = 20657487720.

The previous prime is 20657848271. The next prime is 20657848297. The reversal of 20657848283 is 38284875602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20657848283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20657848243) 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, 73103 + ... + 216008.

It is an arithmetic number, because the mean of its divisors is an integer number (5164552212).

Almost surely, 2^20657848283 is an apocalyptic number.

20657848283 is a deficient number, since it is larger than the sum of its proper divisors (360565).

20657848283 is an equidigital number, since it uses as much as digits as its factorization.

20657848283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360564.

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 20657848283 in words is "twenty billion, six hundred fifty-seven million, eight hundred forty-eight thousand, two hundred eighty-three".