91683425851 has 2 divisors, whose sum is σ = 91683425852. Its totient is φ = 91683425850.

The previous prime is 91683425843. The next prime is 91683425927. The reversal of 91683425851 is 15852438619.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91683425851 - 2³ = 91683425843 is a prime.

It is not a weakly prime, because it can be changed into another prime (91683425831) 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, 45841712925 + 45841712926.

It is an arithmetic number, because the mean of its divisors is an integer number (45841712926).

Almost surely, 2^91683425851 is an apocalyptic number.

91683425851 is a deficient number, since it is larger than the sum of its proper divisors (1).

91683425851 is an equidigital number, since it uses as much as digits as its factorization.

91683425851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 52.

The spelling of 91683425851 in words is "ninety-one billion, six hundred eighty-three million, four hundred twenty-five thousand, eight hundred fifty-one".