28373686091 has 2 divisors, whose sum is σ = 28373686092. Its totient is φ = 28373686090.

The previous prime is 28373686073. The next prime is 28373686139. The reversal of 28373686091 is 19068637382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28373686091 - 2¹⁴ = 28373669707 is a prime.

It is not a weakly prime, because it can be changed into another prime (28373686021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14186843045 + 14186843046.

It is an arithmetic number, because the mean of its divisors is an integer number (14186843046).

Almost surely, 2^28373686091 is an apocalyptic number.

28373686091 is a deficient number, since it is larger than the sum of its proper divisors (1).

28373686091 is an equidigital number, since it uses as much as digits as its factorization.

28373686091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 28373686091 in words is "twenty-eight billion, three hundred seventy-three million, six hundred eighty-six thousand, ninety-one".