20233540361 has 2 divisors, whose sum is σ = 20233540362. Its totient is φ = 20233540360.

The previous prime is 20233540337. The next prime is 20233540409. The reversal of 20233540361 is 16304533202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19534255225 + 699285136 = 139765^2 + 26444^2 .

It is a cyclic number.

It is not a de Polignac number, because 20233540361 - 2¹⁴ = 20233523977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20233540331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116770180 + 10116770181.

It is an arithmetic number, because the mean of its divisors is an integer number (10116770181).

Almost surely, 2^20233540361 is an apocalyptic number.

It is an amenable number.

20233540361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233540361 is an equidigital number, since it uses as much as digits as its factorization.

20233540361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 29.

The spelling of 20233540361 in words is "twenty billion, two hundred thirty-three million, five hundred forty thousand, three hundred sixty-one".