91273441605807 has 32 divisors (see below), whose sum is σ = 123783616180224. Its totient is φ = 59810164524000.

The previous prime is 91273441605781. The next prime is 91273441605877. The reversal of 91273441605807 is 70850614437219.

It is not a de Polignac number, because 91273441605807 - 2⁷ = 91273441605679 is a prime.

It is a super-2 number, since 2×91273441605807² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91273441605877) 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 31 ways as a sum of consecutive naturals, for example, 269657488 + ... + 269995754.

It is an arithmetic number, because the mean of its divisors is an integer number (3868238005632).

It is a 1-persistent number, because it is pandigital, but 2⋅91273441605807 = 182546883211614 is not.

Almost surely, 2^{91273441605807} is an apocalyptic number.

91273441605807 is a deficient number, since it is larger than the sum of its proper divisors (32510174574417).

91273441605807 is a wasteful number, since it uses less digits than its factorization.

91273441605807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341259.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 91273441605807 in words is "ninety-one trillion, two hundred seventy-three billion, four hundred forty-one million, six hundred five thousand, eight hundred seven".