28345641043 has 2 divisors, whose sum is σ = 28345641044. Its totient is φ = 28345641042.

The previous prime is 28345640971. The next prime is 28345641047. The reversal of 28345641043 is 34014654382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28345641043 is a prime.

It is a super-2 number, since 2×28345641043² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28345640987 and 28345641005.

It is not a weakly prime, because it can be changed into another prime (28345641047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14172820521 + 14172820522.

It is an arithmetic number, because the mean of its divisors is an integer number (14172820522).

Almost surely, 2^28345641043 is an apocalyptic number.

28345641043 is a deficient number, since it is larger than the sum of its proper divisors (1).

28345641043 is an equidigital number, since it uses as much as digits as its factorization.

28345641043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 28345641043 in words is "twenty-eight billion, three hundred forty-five million, six hundred forty-one thousand, forty-three".