91000675767 has 16 divisors (see below), whose sum is σ = 122813349120. Its totient is φ = 59928846912.

The previous prime is 91000675721. The next prime is 91000675771. The reversal of 91000675767 is 76757600019.

It is a happy number.

It is not a de Polignac number, because 91000675767 - 2²² = 90996481463 is a prime.

It is a super-2 number, since 2×91000675767² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91000675267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123508 + ... + 444134.

It is an arithmetic number, because the mean of its divisors is an integer number (7675834320).

Almost surely, 2^91000675767 is an apocalyptic number.

91000675767 is a deficient number, since it is larger than the sum of its proper divisors (31812673353).

91000675767 is a wasteful number, since it uses less digits than its factorization.

91000675767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321782.

The product of its (nonzero) digits is 555660, while the sum is 48.

The spelling of 91000675767 in words is "ninety-one billion, six hundred seventy-five thousand, seven hundred sixty-seven".