28011773563 has 2 divisors, whose sum is σ = 28011773564. Its totient is φ = 28011773562.

The previous prime is 28011773497. The next prime is 28011773567. The reversal of 28011773563 is 36537711082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28011773563 - 2¹³ = 28011765371 is a prime.

It is not a weakly prime, because it can be changed into another prime (28011773567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14005886781 + 14005886782.

It is an arithmetic number, because the mean of its divisors is an integer number (14005886782).

Almost surely, 2^28011773563 is an apocalyptic number.

28011773563 is a deficient number, since it is larger than the sum of its proper divisors (1).

28011773563 is an equidigital number, since it uses as much as digits as its factorization.

28011773563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 28011773563 in words is "twenty-eight billion, eleven million, seven hundred seventy-three thousand, five hundred sixty-three".