91983617274433 has 2 divisors, whose sum is σ = 91983617274434. Its totient is φ = 91983617274432.

The previous prime is 91983617274377. The next prime is 91983617274541. The reversal of 91983617274433 is 33447271638919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84746532700944 + 7237084573489 = 9205788^2 + 2690183^2 .

It is a cyclic number.

It is not a de Polignac number, because 91983617274433 - 2¹³ = 91983617266241 is a prime.

It is not a weakly prime, because it can be changed into another prime (91983617278433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45991808637216 + 45991808637217.

It is an arithmetic number, because the mean of its divisors is an integer number (45991808637217).

Almost surely, 2^{91983617274433} is an apocalyptic number.

It is an amenable number.

91983617274433 is a deficient number, since it is larger than the sum of its proper divisors (1).

91983617274433 is an equidigital number, since it uses as much as digits as its factorization.

91983617274433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 164602368, while the sum is 67.

The spelling of 91983617274433 in words is "ninety-one trillion, nine hundred eighty-three billion, six hundred seventeen million, two hundred seventy-four thousand, four hundred thirty-three".