20233072397 has 2 divisors, whose sum is σ = 20233072398. Its totient is φ = 20233072396.

The previous prime is 20233072357. The next prime is 20233072513. The reversal of 20233072397 is 79327033202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16967407081 + 3265665316 = 130259^2 + 57146^2 .

It is a cyclic number.

It is not a de Polignac number, because 20233072397 - 2⁶ = 20233072333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20233072397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20233072357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116536198 + 10116536199.

It is an arithmetic number, because the mean of its divisors is an integer number (10116536199).

Almost surely, 2^20233072397 is an apocalyptic number.

It is an amenable number.

20233072397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233072397 is an equidigital number, since it uses as much as digits as its factorization.

20233072397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 38.

The spelling of 20233072397 in words is "twenty billion, two hundred thirty-three million, seventy-two thousand, three hundred ninety-seven".