105780913939 has 2 divisors, whose sum is σ = 105780913940. Its totient is φ = 105780913938.

The previous prime is 105780913907. The next prime is 105780913949. The reversal of 105780913939 is 939319087501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105780913939 - 2⁵ = 105780913907 is a prime.

It is a super-2 number, since 2×105780913939² (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 105780913939.

It is not a weakly prime, because it can be changed into another prime (105780913949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52890456969 + 52890456970.

It is an arithmetic number, because the mean of its divisors is an integer number (52890456970).

Almost surely, 2^105780913939 is an apocalyptic number.

105780913939 is a deficient number, since it is larger than the sum of its proper divisors (1).

105780913939 is an equidigital number, since it uses as much as digits as its factorization.

105780913939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 55.

The spelling of 105780913939 in words is "one hundred five billion, seven hundred eighty million, nine hundred thirteen thousand, nine hundred thirty-nine".