91936024987 has 2 divisors, whose sum is σ = 91936024988. Its totient is φ = 91936024986.

The previous prime is 91936024951. The next prime is 91936025023. The reversal of 91936024987 is 78942063919.

It is a balanced prime because it is at equal distance from previous prime (91936024951) and next prime (91936025023).

It is a cyclic number.

It is not a de Polignac number, because 91936024987 - 2¹¹ = 91936022939 is a prime.

It is not a weakly prime, because it can be changed into another prime (91936024937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45968012493 + 45968012494.

It is an arithmetic number, because the mean of its divisors is an integer number (45968012494).

Almost surely, 2^91936024987 is an apocalyptic number.

91936024987 is a deficient number, since it is larger than the sum of its proper divisors (1).

91936024987 is an equidigital number, since it uses as much as digits as its factorization.

91936024987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 58.

The spelling of 91936024987 in words is "ninety-one billion, nine hundred thirty-six million, twenty-four thousand, nine hundred eighty-seven".