91276744073 has 8 divisors (see below), whose sum is σ = 93856795080. Its totient is φ = 88702646400.

The previous prime is 91276744033. The next prime is 91276744079. The reversal of 91276744073 is 37044767219.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43036332304 + 48240411769 = 207452^2 + 219637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91276744073 - 2¹⁰ = 91276743049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91276744079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1457228 + ... + 1518573.

It is an arithmetic number, because the mean of its divisors is an integer number (11732099385).

Almost surely, 2^91276744073 is an apocalyptic number.

It is an amenable number.

91276744073 is a deficient number, since it is larger than the sum of its proper divisors (2580051007).

91276744073 is a wasteful number, since it uses less digits than its factorization.

91276744073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976667.

The product of its (nonzero) digits is 1778112, while the sum is 50.

The spelling of 91276744073 in words is "ninety-one billion, two hundred seventy-six million, seven hundred forty-four thousand, seventy-three".