20398402363 has 2 divisors, whose sum is σ = 20398402364. Its totient is φ = 20398402362.

The previous prime is 20398402361. The next prime is 20398402373. The reversal of 20398402363 is 36320489302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20398402363 - 2¹ = 20398402361 is a prime.

Together with 20398402361, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20398402361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10199201181 + 10199201182.

It is an arithmetic number, because the mean of its divisors is an integer number (10199201182).

Almost surely, 2^20398402363 is an apocalyptic number.

20398402363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20398402363 is an equidigital number, since it uses as much as digits as its factorization.

20398402363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 20398402363 in words is "twenty billion, three hundred ninety-eight million, four hundred two thousand, three hundred sixty-three".