91649375963 has 2 divisors, whose sum is σ = 91649375964. Its totient is φ = 91649375962.

The previous prime is 91649375929. The next prime is 91649376047. The reversal of 91649375963 is 36957394619.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91649375963 - 2⁶ = 91649375899 is a prime.

It is a super-2 number, since 2×91649375963² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91649375896 and 91649375905.

It is not a weakly prime, because it can be changed into another prime (91649375063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45824687981 + 45824687982.

It is an arithmetic number, because the mean of its divisors is an integer number (45824687982).

Almost surely, 2^91649375963 is an apocalyptic number.

91649375963 is a deficient number, since it is larger than the sum of its proper divisors (1).

91649375963 is an equidigital number, since it uses as much as digits as its factorization.

91649375963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33067440, while the sum is 62.

The spelling of 91649375963 in words is "ninety-one billion, six hundred forty-nine million, three hundred seventy-five thousand, nine hundred sixty-three".