1361260341421 has 4 divisors (see below), whose sum is σ = 1361300868252. Its totient is φ = 1361219814592.

The previous prime is 1361260341407. The next prime is 1361260341431. The reversal of 1361260341421 is 1241430621631.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140542512100 + 1220717829321 = 374890^2 + 1104861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361260341421 - 2²⁵ = 1361226786989 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 (1361260341431) 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, 20212990 + ... + 20280223.

It is an arithmetic number, because the mean of its divisors is an integer number (340325217063).

Almost surely, 2^{1361260341421} is an apocalyptic number.

It is an amenable number.

1361260341421 is a deficient number, since it is larger than the sum of its proper divisors (40526831).

1361260341421 is an equidigital number, since it uses as much as digits as its factorization.

1361260341421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40526830.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 1361260341421 in words is "one trillion, three hundred sixty-one billion, two hundred sixty million, three hundred forty-one thousand, four hundred twenty-one".