20413342993 has 2 divisors, whose sum is σ = 20413342994. Its totient is φ = 20413342992.

The previous prime is 20413342969. The next prime is 20413343023. The reversal of 20413342993 is 39924331402.

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., 20388412944 + 24930049 = 142788^2 + 4993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413342993 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413342903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206671496 + 10206671497.

It is an arithmetic number, because the mean of its divisors is an integer number (10206671497).

Almost surely, 2^20413342993 is an apocalyptic number.

It is an amenable number.

20413342993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413342993 is an equidigital number, since it uses as much as digits as its factorization.

20413342993 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 20413342993 in words is "twenty billion, four hundred thirteen million, three hundred forty-two thousand, nine hundred ninety-three".