105815087143 has 2 divisors, whose sum is σ = 105815087144. Its totient is φ = 105815087142.

The previous prime is 105815087087. The next prime is 105815087159. The reversal of 105815087143 is 341780518501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105815087143 is a prime.

It is a super-2 number, since 2×105815087143² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105815087143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105815087743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52907543571 + 52907543572.

It is an arithmetic number, because the mean of its divisors is an integer number (52907543572).

Almost surely, 2^105815087143 is an apocalyptic number.

105815087143 is a deficient number, since it is larger than the sum of its proper divisors (1).

105815087143 is an equidigital number, since it uses as much as digits as its factorization.

105815087143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 105815087143 in words is "one hundred five billion, eight hundred fifteen million, eighty-seven thousand, one hundred forty-three".