10171340991 has 80 divisors (see below), whose sum is σ = 18340084224. Its totient is φ = 5491924416.

The previous prime is 10171340989. The next prime is 10171340999. The reversal of 10171340991 is 19904317101.

It is not a de Polignac number, because 10171340991 - 2¹ = 10171340989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10171340999) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1077705 + ... + 1087101.

Almost surely, 2^10171340991 is an apocalyptic number.

10171340991 is a deficient number, since it is larger than the sum of its proper divisors (8168743233).

10171340991 is an equidigital number, since it uses as much as digits as its factorization.

10171340991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The spelling of 10171340991 in words is "ten billion, one hundred seventy-one million, three hundred forty thousand, nine hundred ninety-one".