20473474279 has 2 divisors, whose sum is σ = 20473474280. Its totient is φ = 20473474278.

The previous prime is 20473474249. The next prime is 20473474313. The reversal of 20473474279 is 97247437402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20473474279 - 2⁵ = 20473474247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20473474249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10236737139 + 10236737140.

It is an arithmetic number, because the mean of its divisors is an integer number (10236737140).

Almost surely, 2^20473474279 is an apocalyptic number.

20473474279 is a deficient number, since it is larger than the sum of its proper divisors (1).

20473474279 is an equidigital number, since it uses as much as digits as its factorization.

20473474279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 49.

The spelling of 20473474279 in words is "twenty billion, four hundred seventy-three million, four hundred seventy-four thousand, two hundred seventy-nine".