204130342993 has 2 divisors, whose sum is σ = 204130342994. Its totient is φ = 204130342992.

The previous prime is 204130342981. The next prime is 204130343093. The reversal of 204130342993 is 399243031402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178449639489 + 25680703504 = 422433^2 + 160252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204130342993 is a prime.

It is not a weakly prime, because it can be changed into another prime (204130342903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102065171496 + 102065171497.

It is an arithmetic number, because the mean of its divisors is an integer number (102065171497).

Almost surely, 2^204130342993 is an apocalyptic number.

It is an amenable number.

204130342993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204130342993 is an equidigital number, since it uses as much as digits as its factorization.

204130342993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The spelling of 204130342993 in words is "two hundred four billion, one hundred thirty million, three hundred forty-two thousand, nine hundred ninety-three".