91306060589 has 2 divisors, whose sum is σ = 91306060590. Its totient is φ = 91306060588.

The previous prime is 91306060553. The next prime is 91306060607. The reversal of 91306060589 is 98506060319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78237684100 + 13068376489 = 279710^2 + 114317^2 .

It is a cyclic number.

It is not a de Polignac number, because 91306060589 - 2³⁶ = 22586583853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91306060889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45653030294 + 45653030295.

It is an arithmetic number, because the mean of its divisors is an integer number (45653030295).

Almost surely, 2^91306060589 is an apocalyptic number.

It is an amenable number.

91306060589 is a deficient number, since it is larger than the sum of its proper divisors (1).

91306060589 is an equidigital number, since it uses as much as digits as its factorization.

91306060589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 91306060589 in words is "ninety-one billion, three hundred six million, sixty thousand, five hundred eighty-nine".