86789370991 has 2 divisors, whose sum is σ = 86789370992. Its totient is φ = 86789370990.

The previous prime is 86789370931. The next prime is 86789371129. The reversal of 86789370991 is 19907398768.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86789370991 - 2³⁵ = 52429632623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86789370931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43394685495 + 43394685496.

It is an arithmetic number, because the mean of its divisors is an integer number (43394685496).

Almost surely, 2^86789370991 is an apocalyptic number.

86789370991 is a deficient number, since it is larger than the sum of its proper divisors (1).

86789370991 is an equidigital number, since it uses as much as digits as its factorization.

86789370991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41150592, while the sum is 67.

The spelling of 86789370991 in words is "eighty-six billion, seven hundred eighty-nine million, three hundred seventy thousand, nine hundred ninety-one".