20430343733 has 2 divisors, whose sum is σ = 20430343734. Its totient is φ = 20430343732.

The previous prime is 20430343729. The next prime is 20430343771. The reversal of 20430343733 is 33734303402.

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., 19594960324 + 835383409 = 139982^2 + 28903^2 .

It is a cyclic number.

It is not a de Polignac number, because 20430343733 - 2² = 20430343729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20430343733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20430343723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10215171866 + 10215171867.

It is an arithmetic number, because the mean of its divisors is an integer number (10215171867).

Almost surely, 2^20430343733 is an apocalyptic number.

It is an amenable number.

20430343733 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430343733 is an equidigital number, since it uses as much as digits as its factorization.

20430343733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 32.

The spelling of 20430343733 in words is "twenty billion, four hundred thirty million, three hundred forty-three thousand, seven hundred thirty-three".