91676777686 has 32 divisors (see below), whose sum is σ = 151644003840. Its totient is φ = 41302620576.

The previous prime is 91676777641. The next prime is 91676777701. The reversal of 91676777686 is 68677767619.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 364165 + ... + 562111.

It is an arithmetic number, because the mean of its divisors is an integer number (4738875120).

Almost surely, 2^91676777686 is an apocalyptic number.

91676777686 is a deficient number, since it is larger than the sum of its proper divisors (59967226154).

91676777686 is a wasteful number, since it uses less digits than its factorization.

91676777686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198388.

The product of its digits is 224042112, while the sum is 70.

The spelling of 91676777686 in words is "ninety-one billion, six hundred seventy-six million, seven hundred seventy-seven thousand, six hundred eighty-six".