91000675768 has 16 divisors (see below), whose sum is σ = 170994797280. Its totient is φ = 45402063168.

The previous prime is 91000675721. The next prime is 91000675771. The reversal of 91000675768 is 86757600019.

It is a super-2 number, since 2×91000675768² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12280405 + ... + 12287812.

It is an arithmetic number, because the mean of its divisors is an integer number (10687174830).

Almost surely, 2^91000675768 is an apocalyptic number.

It is an amenable number.

91000675768 is a deficient number, since it is larger than the sum of its proper divisors (79994121512).

91000675768 is a wasteful number, since it uses less digits than its factorization.

91000675768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24568686 (or 24568682 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The spelling of 91000675768 in words is "ninety-one billion, six hundred seventy-five thousand, seven hundred sixty-eight".