91338677177 has 4 divisors (see below), whose sum is σ = 99642193296. Its totient is φ = 83035161060.

The previous prime is 91338677167. The next prime is 91338677191. The reversal of 91338677177 is 77177683319.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77177683319 = 11 ⋅7016153029.

It is a cyclic number.

It is not a de Polignac number, because 91338677177 - 2¹⁴ = 91338660793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91338677117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4151758043 + ... + 4151758064.

It is an arithmetic number, because the mean of its divisors is an integer number (24910548324).

Almost surely, 2^91338677177 is an apocalyptic number.

It is an amenable number.

91338677177 is a deficient number, since it is larger than the sum of its proper divisors (8303516119).

91338677177 is a wasteful number, since it uses less digits than its factorization.

91338677177 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303516118.

The product of its digits is 9335088, while the sum is 59.

The spelling of 91338677177 in words is "ninety-one billion, three hundred thirty-eight million, six hundred seventy-seven thousand, one hundred seventy-seven".