100984145891 has 2 divisors, whose sum is σ = 100984145892. Its totient is φ = 100984145890.

The previous prime is 100984145869. The next prime is 100984145921. The reversal of 100984145891 is 198541489001.

It is a weak prime.

It is an emirp because it is prime and its reverse (198541489001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100984145891 is a prime.

It is not a weakly prime, because it can be changed into another prime (100984145291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50492072945 + 50492072946.

It is an arithmetic number, because the mean of its divisors is an integer number (50492072946).

Almost surely, 2^100984145891 is an apocalyptic number.

100984145891 is a deficient number, since it is larger than the sum of its proper divisors (1).

100984145891 is an equidigital number, since it uses as much as digits as its factorization.

100984145891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 100984145891 in words is "one hundred billion, nine hundred eighty-four million, one hundred forty-five thousand, eight hundred ninety-one".