91047074019 has 16 divisors (see below), whose sum is σ = 133384863360. Its totient is φ = 54783063360.

The previous prime is 91047074011. The next prime is 91047074039.

91047074019 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 91047074019 - 2³ = 91047074011 is a prime.

It is a super-2 number, since 2×91047074019² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91047074011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9919882 + ... + 9929055.

It is an arithmetic number, because the mean of its divisors is an integer number (8336553960).

Almost surely, 2^91047074019 is an apocalyptic number.

91047074019 is a deficient number, since it is larger than the sum of its proper divisors (42337789341).

91047074019 is a wasteful number, since it uses less digits than its factorization.

91047074019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19849090.

The product of its (nonzero) digits is 63504, while the sum is 42.

It can be divided in two parts, 910470 and 74019, that added together give a palindrome (984489).

The spelling of 91047074019 in words is "ninety-one billion, forty-seven million, seventy-four thousand, nineteen".