20203270697 has 2 divisors, whose sum is σ = 20203270698. Its totient is φ = 20203270696.

The previous prime is 20203270643. The next prime is 20203270733. The reversal of 20203270697 is 79607230202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20126813161 + 76457536 = 141869^2 + 8744^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203270697 - 2²⁶ = 20136161833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20203270697.

It is not a weakly prime, because it can be changed into another prime (20203270397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101635348 + 10101635349.

It is an arithmetic number, because the mean of its divisors is an integer number (10101635349).

Almost surely, 2^20203270697 is an apocalyptic number.

It is an amenable number.

20203270697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203270697 is an equidigital number, since it uses as much as digits as its factorization.

20203270697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 20203270697 in words is "twenty billion, two hundred three million, two hundred seventy thousand, six hundred ninety-seven".