105195942791 has 2 divisors, whose sum is σ = 105195942792. Its totient is φ = 105195942790.

The previous prime is 105195942769. The next prime is 105195942847. The reversal of 105195942791 is 197249591501.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (197249591501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105195942791 is a prime.

It is a super-2 number, since 2×105195942791² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105195942491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52597971395 + 52597971396.

It is an arithmetic number, because the mean of its divisors is an integer number (52597971396).

Almost surely, 2^105195942791 is an apocalyptic number.

105195942791 is a deficient number, since it is larger than the sum of its proper divisors (1).

105195942791 is an equidigital number, since it uses as much as digits as its factorization.

105195942791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1020600, while the sum is 53.

The spelling of 105195942791 in words is "one hundred five billion, one hundred ninety-five million, nine hundred forty-two thousand, seven hundred ninety-one".