20400608222383 has 2 divisors, whose sum is σ = 20400608222384. Its totient is φ = 20400608222382.

The previous prime is 20400608222333. The next prime is 20400608222411. The reversal of 20400608222383 is 38322280600402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20400608222383 - 2²⁵ = 20400574667951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20400608222333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200304111191 + 10200304111192.

It is an arithmetic number, because the mean of its divisors is an integer number (10200304111192).

Almost surely, 2^{20400608222383} is an apocalyptic number.

20400608222383 is a deficient number, since it is larger than the sum of its proper divisors (1).

20400608222383 is an equidigital number, since it uses as much as digits as its factorization.

20400608222383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 40.

Adding to 20400608222383 its reverse (38322280600402), we get a palindrome (58722888822785).

The spelling of 20400608222383 in words is "twenty trillion, four hundred billion, six hundred eight million, two hundred twenty-two thousand, three hundred eighty-three".