361661603103 has 20 divisors (see below), whose sum is σ = 541247670040. Its totient is φ = 240666923952.

The previous prime is 361661603059. The next prime is 361661603111. The reversal of 361661603103 is 301306166163.

361661603103 is a `hidden beast` number, since 3 + 6 + 1 + 6 + 616 + 0 + 31 + 0 + 3 = 666.

It is not a de Polignac number, because 361661603103 - 2²⁵ = 361628048671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361661607103) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4037008 + ... + 4125621.

It is an arithmetic number, because the mean of its divisors is an integer number (27062383502).

Almost surely, 2^361661603103 is an apocalyptic number.

361661603103 is a deficient number, since it is larger than the sum of its proper divisors (179586066937).

361661603103 is an equidigital number, since it uses as much as digits as its factorization.

361661603103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8163188 (or 8163179 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

Adding to 361661603103 its reverse (301306166163), we get a palindrome (662967769266).

The spelling of 361661603103 in words is "three hundred sixty-one billion, six hundred sixty-one million, six hundred three thousand, one hundred three".