9941145491897 has 8 divisors (see below), whose sum is σ = 10626378215040. Its totient is φ = 9276996852640.

The previous prime is 9941145491891. The next prime is 9941145491923. The reversal of 9941145491897 is 7981945411499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9941145491897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9941145491897.

It is not an unprimeable number, because it can be changed into a prime (9941145491891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5271019997 + ... + 5271021882.

It is an arithmetic number, because the mean of its divisors is an integer number (1328297276880).

Almost surely, 2^{9941145491897} is an apocalyptic number.

It is an amenable number.

9941145491897 is a deficient number, since it is larger than the sum of its proper divisors (685232723143).

9941145491897 is a wasteful number, since it uses less digits than its factorization.

9941145491897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542041943.

The product of its digits is 117573120, while the sum is 71.

The spelling of 9941145491897 in words is "nine trillion, nine hundred forty-one billion, one hundred forty-five million, four hundred ninety-one thousand, eight hundred ninety-seven".