91000675766 has 32 divisors (see below), whose sum is σ = 183274092288. Its totient is φ = 32727515040.

The previous prime is 91000675721. The next prime is 91000675771. The reversal of 91000675766 is 66757600019.

It is a happy number.

It is a super-2 number, since 2×91000675766² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91000675766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22725440 + ... + 22729443.

It is an arithmetic number, because the mean of its divisors is an integer number (5727315384).

Almost surely, 2^91000675766 is an apocalyptic number.

91000675766 is an abundant number, since it is smaller than the sum of its proper divisors (92273416522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91000675766 is a wasteful number, since it uses less digits than its factorization.

91000675766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45454916.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 91000675766 in words is "ninety-one billion, six hundred seventy-five thousand, seven hundred sixty-six".