91066402543 has 2 divisors, whose sum is σ = 91066402544. Its totient is φ = 91066402542.

The previous prime is 91066402513. The next prime is 91066402573. The reversal of 91066402543 is 34520466019.

It is a balanced prime because it is at equal distance from previous prime (91066402513) and next prime (91066402573).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91066402543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91066402496 and 91066402505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91066402513) 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 as a sum of consecutive naturals, namely, 45533201271 + 45533201272.

It is an arithmetic number, because the mean of its divisors is an integer number (45533201272).

Almost surely, 2^91066402543 is an apocalyptic number.

91066402543 is a deficient number, since it is larger than the sum of its proper divisors (1).

91066402543 is an equidigital number, since it uses as much as digits as its factorization.

91066402543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 91066402543 in words is "ninety-one billion, sixty-six million, four hundred two thousand, five hundred forty-three".