101781875171 has 2 divisors, whose sum is σ = 101781875172. Its totient is φ = 101781875170.

The previous prime is 101781875147. The next prime is 101781875213. The reversal of 101781875171 is 171578187101.

It is a weak prime.

It is an emirp because it is prime and its reverse (171578187101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101781875171 is a prime.

It is a super-2 number, since 2×101781875171² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101781875071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50890937585 + 50890937586.

It is an arithmetic number, because the mean of its divisors is an integer number (50890937586).

Almost surely, 2^101781875171 is an apocalyptic number.

101781875171 is a deficient number, since it is larger than the sum of its proper divisors (1).

101781875171 is an equidigital number, since it uses as much as digits as its factorization.

101781875171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 109760, while the sum is 47.

The spelling of 101781875171 in words is "one hundred one billion, seven hundred eighty-one million, eight hundred seventy-five thousand, one hundred seventy-one".