20243000377 has 2 divisors, whose sum is σ = 20243000378. Its totient is φ = 20243000376.

The previous prime is 20243000363. The next prime is 20243000381. The reversal of 20243000377 is 77300034202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10707282576 + 9535717801 = 103476^2 + 97651^2 .

It is a cyclic number.

It is not a de Polignac number, because 20243000377 - 2²⁷ = 20108782649 is a prime.

It is not a weakly prime, because it can be changed into another prime (20243000317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121500188 + 10121500189.

It is an arithmetic number, because the mean of its divisors is an integer number (10121500189).

Almost surely, 2^20243000377 is an apocalyptic number.

It is an amenable number.

20243000377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243000377 is an equidigital number, since it uses as much as digits as its factorization.

20243000377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 28.

Adding to 20243000377 its reverse (77300034202), we get a palindrome (97543034579).

The spelling of 20243000377 in words is "twenty billion, two hundred forty-three million, three hundred seventy-seven", and thus it is an aban number.