20001745343 has 2 divisors, whose sum is σ = 20001745344. Its totient is φ = 20001745342.

The previous prime is 20001745339. The next prime is 20001745399. The reversal of 20001745343 is 34354710002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20001745343 - 2² = 20001745339 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20001745943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000872671 + 10000872672.

It is an arithmetic number, because the mean of its divisors is an integer number (10000872672).

Almost surely, 2^20001745343 is an apocalyptic number.

20001745343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001745343 is an equidigital number, since it uses as much as digits as its factorization.

20001745343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The spelling of 20001745343 in words is "twenty billion, one million, seven hundred forty-five thousand, three hundred forty-three".