91450655677 has 4 divisors (see below), whose sum is σ = 93681159516. Its totient is φ = 89220151840.

The previous prime is 91450655663. The next prime is 91450655683. The reversal of 91450655677 is 77655605419.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12389025636 + 79061630041 = 111306^2 + 281179^2 .

It is a cyclic number.

It is not a de Polignac number, because 91450655677 - 2¹¹ = 91450653629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91450655477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1115251858 + ... + 1115251939.

It is an arithmetic number, because the mean of its divisors is an integer number (23420289879).

Almost surely, 2^91450655677 is an apocalyptic number.

It is an amenable number.

91450655677 is a deficient number, since it is larger than the sum of its proper divisors (2230503839).

91450655677 is a wasteful number, since it uses less digits than its factorization.

91450655677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230503838.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 91450655677 in words is "ninety-one billion, four hundred fifty million, six hundred fifty-five thousand, six hundred seventy-seven".