20346595229 has 2 divisors, whose sum is σ = 20346595230. Its totient is φ = 20346595228.

The previous prime is 20346595193. The next prime is 20346595249. The reversal of 20346595229 is 92259564302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18410419225 + 1936176004 = 135685^2 + 44002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20346595229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346595249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173297614 + 10173297615.

It is an arithmetic number, because the mean of its divisors is an integer number (10173297615).

Almost surely, 2^20346595229 is an apocalyptic number.

It is an amenable number.

20346595229 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346595229 is an equidigital number, since it uses as much as digits as its factorization.

20346595229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 20346595229 in words is "twenty billion, three hundred forty-six million, five hundred ninety-five thousand, two hundred twenty-nine".