105103404661 has 2 divisors, whose sum is σ = 105103404662. Its totient is φ = 105103404660.

The previous prime is 105103404649. The next prime is 105103404713. The reversal of 105103404661 is 166404301501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71486182161 + 33617222500 = 267369^2 + 183350^2 .

It is an emirp because it is prime and its reverse (166404301501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105103404661 - 2⁵ = 105103404629 is a prime.

It is a super-2 number, since 2×105103404661² (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 (105103404361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52551702330 + 52551702331.

It is an arithmetic number, because the mean of its divisors is an integer number (52551702331).

Almost surely, 2^105103404661 is an apocalyptic number.

It is an amenable number.

105103404661 is a deficient number, since it is larger than the sum of its proper divisors (1).

105103404661 is an equidigital number, since it uses as much as digits as its factorization.

105103404661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 105103404661 in words is "one hundred five billion, one hundred three million, four hundred four thousand, six hundred sixty-one".