91128682853 has 8 divisors (see below), whose sum is σ = 98284413528. Its totient is φ = 83993785344.

The previous prime is 91128682847. The next prime is 91128682871. The reversal of 91128682853 is 35828682119.

It can be written as a sum of positive squares in 4 ways, for example, as 58721569 + 91069961284 = 7663^2 + 301778^2 .

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 91128682853 - 2¹⁴ = 91128666469 is a prime.

It is a super-3 number, since 3×91128682853³ (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 = 91128682795 and 91128682804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91128682823) 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, 5199200 + ... + 5216697.

It is an arithmetic number, because the mean of its divisors is an integer number (12285551691).

Almost surely, 2^91128682853 is an apocalyptic number.

It is an amenable number.

91128682853 is a deficient number, since it is larger than the sum of its proper divisors (7155730675).

91128682853 is a wasteful number, since it uses less digits than its factorization.

91128682853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416583.

The product of its digits is 1658880, while the sum is 53.

The spelling of 91128682853 in words is "ninety-one billion, one hundred twenty-eight million, six hundred eighty-two thousand, eight hundred fifty-three".