91755474549 has 16 divisors (see below), whose sum is σ = 126567230400. Its totient is φ = 59057282816.

The previous prime is 91755474529. The next prime is 91755474563. The reversal of 91755474549 is 94547455719.

It is a cyclic number.

It is not a de Polignac number, because 91755474549 - 2¹⁵ = 91755441781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91755474492 and 91755474501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91755474529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2286742 + ... + 2326520.

It is an arithmetic number, because the mean of its divisors is an integer number (7910451900).

Almost surely, 2^91755474549 is an apocalyptic number.

It is an amenable number.

91755474549 is a deficient number, since it is larger than the sum of its proper divisors (34811755851).

91755474549 is a wasteful number, since it uses less digits than its factorization.

91755474549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66324.

The product of its digits is 31752000, while the sum is 60.

The spelling of 91755474549 in words is "ninety-one billion, seven hundred fifty-five million, four hundred seventy-four thousand, five hundred forty-nine".