91299171455 has 8 divisors (see below), whose sum is σ = 109579720752. Its totient is φ = 73025527168.

The previous prime is 91299171451. The next prime is 91299171479. The reversal of 91299171455 is 55417199219.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91299171455 - 2² = 91299171451 is a prime.

It is a super-3 number, since 3×91299171455³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91299171397 and 91299171406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91299171451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697117 + ... + 1750086.

It is an arithmetic number, because the mean of its divisors is an integer number (13697465094).

Almost surely, 2^91299171455 is an apocalyptic number.

91299171455 is a deficient number, since it is larger than the sum of its proper divisors (18280549297).

91299171455 is a wasteful number, since it uses less digits than its factorization.

91299171455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452505.

The product of its digits is 1020600, while the sum is 53.

The spelling of 91299171455 in words is "ninety-one billion, two hundred ninety-nine million, one hundred seventy-one thousand, four hundred fifty-five".