20235254279 has 2 divisors, whose sum is σ = 20235254280. Its totient is φ = 20235254278.

The previous prime is 20235254233. The next prime is 20235254327. The reversal of 20235254279 is 97245253202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20235254279 - 2³² = 15940286983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20235154279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117627139 + 10117627140.

It is an arithmetic number, because the mean of its divisors is an integer number (10117627140).

Almost surely, 2^20235254279 is an apocalyptic number.

20235254279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20235254279 is an equidigital number, since it uses as much as digits as its factorization.

20235254279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20235254279 in words is "twenty billion, two hundred thirty-five million, two hundred fifty-four thousand, two hundred seventy-nine".