3561720326103 has 16 divisors (see below), whose sum is σ = 5074442350560. Its totient is φ = 2214302109696.

The previous prime is 3561720326093. The next prime is 3561720326107. The reversal of 3561720326103 is 3016230271653.

It is not a de Polignac number, because 3561720326103 - 2¹⁸ = 3561720063959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561720326107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320350650 + ... + 320361767.

It is an arithmetic number, because the mean of its divisors is an integer number (317152646910).

Almost surely, 2^{3561720326103} is an apocalyptic number.

3561720326103 is a deficient number, since it is larger than the sum of its proper divisors (1512722024457).

3561720326103 is a wasteful number, since it uses less digits than its factorization.

3561720326103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640712546.

The product of its (nonzero) digits is 136080, while the sum is 39.

Adding to 3561720326103 its reverse (3016230271653), we get a palindrome (6577950597756).

The spelling of 3561720326103 in words is "three trillion, five hundred sixty-one billion, seven hundred twenty million, three hundred twenty-six thousand, one hundred three".