28042734497 has 2 divisors, whose sum is σ = 28042734498. Its totient is φ = 28042734496.

The previous prime is 28042734457. The next prime is 28042734527. The reversal of 28042734497 is 79443724082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26752200721 + 1290533776 = 163561^2 + 35924^2 .

It is a cyclic number.

It is not a de Polignac number, because 28042734497 - 2¹⁶ = 28042668961 is a prime.

It is not a weakly prime, because it can be changed into another prime (28042734407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14021367248 + 14021367249.

It is an arithmetic number, because the mean of its divisors is an integer number (14021367249).

Almost surely, 2^28042734497 is an apocalyptic number.

It is an amenable number.

28042734497 is a deficient number, since it is larger than the sum of its proper divisors (1).

28042734497 is an equidigital number, since it uses as much as digits as its factorization.

28042734497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 28042734497 in words is "twenty-eight billion, forty-two million, seven hundred thirty-four thousand, four hundred ninety-seven".