20146993943 has 2 divisors, whose sum is σ = 20146993944. Its totient is φ = 20146993942.

The previous prime is 20146993931. The next prime is 20146993969. The reversal of 20146993943 is 34939964102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20146993943 - 2⁸ = 20146993687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20146993891 and 20146993900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20146993903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10073496971 + 10073496972.

It is an arithmetic number, because the mean of its divisors is an integer number (10073496972).

Almost surely, 2^20146993943 is an apocalyptic number.

20146993943 is a deficient number, since it is larger than the sum of its proper divisors (1).

20146993943 is an equidigital number, since it uses as much as digits as its factorization.

20146993943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 20146993943 in words is "twenty billion, one hundred forty-six million, nine hundred ninety-three thousand, nine hundred forty-three".