91909675002241 has 4 divisors (see below), whose sum is σ = 91996300521684. Its totient is φ = 91823049482800.

The previous prime is 91909675002179. The next prime is 91909675002251. The reversal of 91909675002241 is 14220057690919.

It is a happy number.

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 19480571142400 + 72429103859841 = 4413680^2 + 8510529^2 .

It is a cyclic number.

It is not a de Polignac number, because 91909675002241 - 2¹⁵ = 91909674969473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91909675002251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43312758130 + ... + 43312760251.

It is an arithmetic number, because the mean of its divisors is an integer number (22999075130421).

Almost surely, 2^{91909675002241} is an apocalyptic number.

It is an amenable number.

91909675002241 is a deficient number, since it is larger than the sum of its proper divisors (86625519443).

91909675002241 is a wasteful number, since it uses less digits than its factorization.

91909675002241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86625519442.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 91909675002241 in words is "ninety-one trillion, nine hundred nine billion, six hundred seventy-five million, two thousand, two hundred forty-one".