91477173496859 has 2 divisors, whose sum is σ = 91477173496860. Its totient is φ = 91477173496858.

The previous prime is 91477173496799. The next prime is 91477173496879. The reversal of 91477173496859 is 95869437177419.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91477173496859 - 2¹² = 91477173492763 is a prime.

It is a super-3 number, since 3×91477173496859³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (91477173496879) 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, 45738586748429 + 45738586748430.

It is an arithmetic number, because the mean of its divisors is an integer number (45738586748430).

Almost surely, 2^{91477173496859} is an apocalyptic number.

91477173496859 is a deficient number, since it is larger than the sum of its proper divisors (1).

91477173496859 is an equidigital number, since it uses as much as digits as its factorization.

91477173496859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880541440, while the sum is 80.

The spelling of 91477173496859 in words is "ninety-one trillion, four hundred seventy-seven billion, one hundred seventy-three million, four hundred ninety-six thousand, eight hundred fifty-nine".