20270374009 has 2 divisors, whose sum is σ = 20270374010. Its totient is φ = 20270374008.

The previous prime is 20270374001. The next prime is 20270374013. The reversal of 20270374009 is 90047307202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18129276025 + 2141097984 = 134645^2 + 46272^2 .

It is a cyclic number.

It is not a de Polignac number, because 20270374009 - 2³ = 20270374001 is a prime.

It is not a weakly prime, because it can be changed into another prime (20270374001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135187004 + 10135187005.

It is an arithmetic number, because the mean of its divisors is an integer number (10135187005).

Almost surely, 2^20270374009 is an apocalyptic number.

It is an amenable number.

20270374009 is a deficient number, since it is larger than the sum of its proper divisors (1).

20270374009 is an equidigital number, since it uses as much as digits as its factorization.

20270374009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 20270374009 in words is "twenty billion, two hundred seventy million, three hundred seventy-four thousand, nine".