20894029903 has 2 divisors, whose sum is σ = 20894029904. Its totient is φ = 20894029902.

The previous prime is 20894029837. The next prime is 20894029951. The reversal of 20894029903 is 30992049802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20894029903 - 2⁹ = 20894029391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20894029973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10447014951 + 10447014952.

It is an arithmetic number, because the mean of its divisors is an integer number (10447014952).

Almost surely, 2^20894029903 is an apocalyptic number.

20894029903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20894029903 is an equidigital number, since it uses as much as digits as its factorization.

20894029903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 20894029903 in words is "twenty billion, eight hundred ninety-four million, twenty-nine thousand, nine hundred three".