20390150593 has 2 divisors, whose sum is σ = 20390150594. Its totient is φ = 20390150592.

The previous prime is 20390150551. The next prime is 20390150603. The reversal of 20390150593 is 39505109302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18705212289 + 1684938304 = 136767^2 + 41048^2 .

It is a cyclic number.

It is not a de Polignac number, because 20390150593 - 2²⁹ = 19853279681 is a prime.

It is not a weakly prime, because it can be changed into another prime (20390150293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10195075296 + 10195075297.

It is an arithmetic number, because the mean of its divisors is an integer number (10195075297).

Almost surely, 2^20390150593 is an apocalyptic number.

It is an amenable number.

20390150593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20390150593 is an equidigital number, since it uses as much as digits as its factorization.

20390150593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36450, while the sum is 37.

Adding to 20390150593 its reverse (39505109302), we get a palindrome (59895259895).

The spelling of 20390150593 in words is "twenty billion, three hundred ninety million, one hundred fifty thousand, five hundred ninety-three".