20402227903 has 2 divisors, whose sum is σ = 20402227904. Its totient is φ = 20402227902.

The previous prime is 20402227897. The next prime is 20402227913. The reversal of 20402227903 is 30972220402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20402227903 - 2²⁹ = 19865356991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20402227913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10201113951 + 10201113952.

It is an arithmetic number, because the mean of its divisors is an integer number (10201113952).

Almost surely, 2^20402227903 is an apocalyptic number.

20402227903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20402227903 is an equidigital number, since it uses as much as digits as its factorization.

20402227903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 20402227903 in words is "twenty billion, four hundred two million, two hundred twenty-seven thousand, nine hundred three".