91190107008 has 1296 divisors, whose sum is σ = 367918059600. Its totient is φ = 21587005440.

The previous prime is 91190106971. The next prime is 91190107013. The reversal of 91190107008 is 80070109119.

It is a super-2 number, since 2×91190107008² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 161 ways as a sum of consecutive naturals, for example, 1154305113 + ... + 1154305191.

Almost surely, 2^91190107008 is an apocalyptic number.

91190107008 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91190107008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183959029800).

91190107008 is an abundant number, since it is smaller than the sum of its proper divisors (276727952592).

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

91190107008 is a wasteful number, since it uses less digits than its factorization.

91190107008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The spelling of 91190107008 in words is "ninety-one billion, one hundred ninety million, one hundred seven thousand, eight".