1361403660611 has 4 divisors (see below), whose sum is σ = 1369755830472. Its totient is φ = 1353051490752.

The previous prime is 1361403660599. The next prime is 1361403660629. The reversal of 1361403660611 is 1160663041631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1361403660611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361403669611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4176084686 + ... + 4176085011.

It is an arithmetic number, because the mean of its divisors is an integer number (342438957618).

Almost surely, 2^{1361403660611} is an apocalyptic number.

1361403660611 is a deficient number, since it is larger than the sum of its proper divisors (8352169861).

1361403660611 is an equidigital number, since it uses as much as digits as its factorization.

1361403660611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8352169860.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 1361403660611 in words is "one trillion, three hundred sixty-one billion, four hundred three million, six hundred sixty thousand, six hundred eleven".