20818757392283 has 2 divisors, whose sum is σ = 20818757392284. Its totient is φ = 20818757392282.

The previous prime is 20818757392271. The next prime is 20818757392327. The reversal of 20818757392283 is 38229375781802.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20818757392283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20818757392253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10409378696141 + 10409378696142.

It is an arithmetic number, because the mean of its divisors is an integer number (10409378696142).

Almost surely, 2^{20818757392283} is an apocalyptic number.

20818757392283 is a deficient number, since it is larger than the sum of its proper divisors (1).

20818757392283 is an equidigital number, since it uses as much as digits as its factorization.

20818757392283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 20818757392283 in words is "twenty trillion, eight hundred eighteen billion, seven hundred fifty-seven million, three hundred ninety-two thousand, two hundred eighty-three".