3561188998723 has 2 divisors, whose sum is σ = 3561188998724. Its totient is φ = 3561188998722.

The previous prime is 3561188998643. The next prime is 3561188998747. The reversal of 3561188998723 is 3278998811653.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3561188998723 is a prime.

It is not a weakly prime, because it can be changed into another prime (3561188998123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780594499361 + 1780594499362.

It is an arithmetic number, because the mean of its divisors is an integer number (1780594499362).

Almost surely, 2^{3561188998723} is an apocalyptic number.

3561188998723 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561188998723 is an equidigital number, since it uses as much as digits as its factorization.

3561188998723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 156764160, while the sum is 70.

The spelling of 3561188998723 in words is "three trillion, five hundred sixty-one billion, one hundred eighty-eight million, nine hundred ninety-eight thousand, seven hundred twenty-three".