91835422945 has 12 divisors (see below), whose sum is σ = 128194754004. Its totient is φ = 62972861280.

The previous prime is 91835422901. The next prime is 91835422963. The reversal of 91835422945 is 54922453819.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45379224576 + 46456198369 = 213024^2 + 215537^2 .

It is not a de Polignac number, because 91835422945 - 2²³ = 91827034337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91835422892 and 91835422901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187418986 + ... + 187419475.

It is an arithmetic number, because the mean of its divisors is an integer number (10682896167).

Almost surely, 2^91835422945 is an apocalyptic number.

It is an amenable number.

91835422945 is a deficient number, since it is larger than the sum of its proper divisors (36359331059).

91835422945 is a wasteful number, since it uses less digits than its factorization.

91835422945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374838480 (or 374838473 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The spelling of 91835422945 in words is "ninety-one billion, eight hundred thirty-five million, four hundred twenty-two thousand, nine hundred forty-five".