1361660411461 has 8 divisors (see below), whose sum is σ = 1587942171200. Its totient is φ = 1167137495244.

The previous prime is 1361660411429. The next prime is 1361660411473. The reversal of 1361660411461 is 1641140661631.

It is a happy number.

It is not a de Polignac number, because 1361660411461 - 2⁵ = 1361660411429 is a prime.

It is a super-2 number, since 2×1361660411461² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361660411561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1984927371 + ... + 1984928056.

It is an arithmetic number, because the mean of its divisors is an integer number (198492771400).

Almost surely, 2^{1361660411461} is an apocalyptic number.

It is an amenable number.

1361660411461 is a deficient number, since it is larger than the sum of its proper divisors (226281759739).

1361660411461 is an frugal number, since it uses more digits than its factorization.

1361660411461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3969855448 (or 3969855434 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 1361660411461 in words is "one trillion, three hundred sixty-one billion, six hundred sixty million, four hundred eleven thousand, four hundred sixty-one".