91273273033 has 2 divisors, whose sum is σ = 91273273034. Its totient is φ = 91273273032.

The previous prime is 91273272997. The next prime is 91273273097. The reversal of 91273273033 is 33037237219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84772398649 + 6500874384 = 291157^2 + 80628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91273273033 is a prime.

It is not a weakly prime, because it can be changed into another prime (91273277033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45636636516 + 45636636517.

It is an arithmetic number, because the mean of its divisors is an integer number (45636636517).

Almost surely, 2^91273273033 is an apocalyptic number.

It is an amenable number.

91273273033 is a deficient number, since it is larger than the sum of its proper divisors (1).

91273273033 is an equidigital number, since it uses as much as digits as its factorization.

91273273033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884, while the sum is 40.

The spelling of 91273273033 in words is "ninety-one billion, two hundred seventy-three million, two hundred seventy-three thousand, thirty-three".