20359033697 has 2 divisors, whose sum is σ = 20359033698. Its totient is φ = 20359033696.

The previous prime is 20359033679. The next prime is 20359033769. The reversal of 20359033697 is 79633095302.

Together with next prime (20359033769) it forms an Ormiston pair, because they use the same digits, order apart.

Together with previous prime (20359033679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13914797521 + 6444236176 = 117961^2 + 80276^2 .

It is a cyclic number.

It is not a de Polignac number, because 20359033697 - 2¹² = 20359029601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20359033997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10179516848 + 10179516849.

It is an arithmetic number, because the mean of its divisors is an integer number (10179516849).

Almost surely, 2^20359033697 is an apocalyptic number.

It is an amenable number.

20359033697 is a deficient number, since it is larger than the sum of its proper divisors (1).

20359033697 is an equidigital number, since it uses as much as digits as its factorization.

20359033697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 47.

The spelling of 20359033697 in words is "twenty billion, three hundred fifty-nine million, thirty-three thousand, six hundred ninety-seven".