103195780081 has 9 divisors (see below), whose sum is σ = 107885354521. Its totient is φ = 98701939732.

The previous prime is 103195780013. The next prime is 103195780111. The reversal of 103195780081 is 180087591301.

The square root of 103195780081 is 321241.

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

It is not a de Polignac number, because 103195780081 - 2²³ = 103187391473 is a prime.

It is a super-2 number, since 2×103195780081² (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 (103195780001) 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, 7381560 + ... + 7395526.

Almost surely, 2^103195780081 is an apocalyptic number.

103195780081 is the 321241-st square number.

103195780081 is the 160621-st centered octagonal number.

It is an amenable number.

103195780081 is a deficient number, since it is larger than the sum of its proper divisors (4689574440).

103195780081 is an frugal number, since it uses more digits than its factorization.

103195780081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27980 (or 13990 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 43.

The spelling of 103195780081 in words is "one hundred three billion, one hundred ninety-five million, seven hundred eighty thousand, eighty-one".