91765675008 has 440 divisors, whose sum is σ = 318434333184. Its totient is φ = 25778995200.

The previous prime is 91765675007. The next prime is 91765675013. The reversal of 91765675008 is 80057656719.

91765675008 is a `hidden beast` number, since 9 + 1 + 76 + 5 + 67 + 500 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91765675007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35415793 + ... + 35418383.

Almost surely, 2^91765675008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91765675008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159217166592).

91765675008 is an abundant number, since it is smaller than the sum of its proper divisors (226668658176).

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

91765675008 is a wasteful number, since it uses less digits than its factorization.

91765675008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691 (or 2664 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 54.

The spelling of 91765675008 in words is "ninety-one billion, seven hundred sixty-five million, six hundred seventy-five thousand, eight".