105810981796 has 27 divisors (see below), whose sum is σ = 200524707873. Its totient is φ = 48831934320.

The previous prime is 105810981791. The next prime is 105810981811. The reversal of 105810981796 is 697189018501.

The square root of 105810981796 is 325286.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15652512100 + 90158469696 = 125110^2 + 300264^2 .

It is a super-2 number, since 2×105810981796² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105810981791) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8451181 + ... + 8463691.

Almost surely, 2^105810981796 is an apocalyptic number.

105810981796 is the 325286-th square number.

It is an amenable number.

105810981796 is a deficient number, since it is larger than the sum of its proper divisors (94713726077).

105810981796 is an frugal number, since it uses more digits than its factorization.

105810981796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25052 (or 12526 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 55.

The spelling of 105810981796 in words is "one hundred five billion, eight hundred ten million, nine hundred eighty-one thousand, seven hundred ninety-six".