91141406545 has 24 divisors (see below), whose sum is σ = 127267194600. Its totient is φ = 62476710912.

The previous prime is 91141406533. The next prime is 91141406569. The reversal of 91141406545 is 54560414119.

It can be written as a sum of positive squares in 4 ways, for example, as 21191207184 + 69950199361 = 145572^2 + 264481^2 .

It is not a de Polignac number, because 91141406545 - 2²⁵ = 91107852113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91141406498 and 91141406507.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 717711 + ... + 835099.

It is an arithmetic number, because the mean of its divisors is an integer number (5302799775).

Almost surely, 2^91141406545 is an apocalyptic number.

It is an amenable number.

91141406545 is a deficient number, since it is larger than the sum of its proper divisors (36125788055).

91141406545 is a wasteful number, since it uses less digits than its factorization.

91141406545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120577 (or 120570 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 91141406545 in words is "ninety-one billion, one hundred forty-one million, four hundred six thousand, five hundred forty-five".