91366648353 has 10 divisors (see below), whose sum is σ = 136485980994. Its totient is φ = 60911098848.

The previous prime is 91366648319. The next prime is 91366648367. The reversal of 91366648353 is 35384666319.

It can be written as a sum of positive squares in only one way, i.e., 76804916769 + 14561731584 = 277137^2 + 120672^2 .

It is not a de Polignac number, because 91366648353 - 2⁸ = 91366648097 is a prime.

It is a super-2 number, since 2×91366648353² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91366648353.

It is not an unprimeable number, because it can be changed into a prime (91366648853) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 563991576 + ... + 563991737.

Almost surely, 2^91366648353 is an apocalyptic number.

It is an amenable number.

91366648353 is a deficient number, since it is larger than the sum of its proper divisors (45119332641).

91366648353 is a wasteful number, since it uses less digits than its factorization.

91366648353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127983325 (or 1127983316 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 54.

The spelling of 91366648353 in words is "ninety-one billion, three hundred sixty-six million, six hundred forty-eight thousand, three hundred fifty-three".