91983617274541 has 2 divisors, whose sum is σ = 91983617274542. Its totient is φ = 91983617274540.

The previous prime is 91983617274433. The next prime is 91983617274599. The reversal of 91983617274541 is 14547271638919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52895438055625 + 39088179218916 = 7272925^2 + 6252054^2 .

It is a cyclic number.

It is not a de Polignac number, because 91983617274541 - 2³⁷ = 91846178321069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91983617274641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45991808637270 + 45991808637271.

It is an arithmetic number, because the mean of its divisors is an integer number (45991808637271).

Almost surely, 2^{91983617274541} is an apocalyptic number.

It is an amenable number.

91983617274541 is a deficient number, since it is larger than the sum of its proper divisors (1).

91983617274541 is an equidigital number, since it uses as much as digits as its factorization.

91983617274541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 67.

The spelling of 91983617274541 in words is "ninety-one trillion, nine hundred eighty-three billion, six hundred seventeen million, two hundred seventy-four thousand, five hundred forty-one".