91939735007 has 2 divisors, whose sum is σ = 91939735008. Its totient is φ = 91939735006.

The previous prime is 91939734977. The next prime is 91939735067. The reversal of 91939735007 is 70053793919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91939735007 - 2¹⁴ = 91939718623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91939735007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91939735067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45969867503 + 45969867504.

It is an arithmetic number, because the mean of its divisors is an integer number (45969867504).

Almost surely, 2^91939735007 is an apocalyptic number.

91939735007 is a deficient number, since it is larger than the sum of its proper divisors (1).

91939735007 is an equidigital number, since it uses as much as digits as its factorization.

91939735007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1607445, while the sum is 53.

The spelling of 91939735007 in words is "ninety-one billion, nine hundred thirty-nine million, seven hundred thirty-five thousand, seven".