1361255061371 has 4 divisors (see below), whose sum is σ = 1374471130032. Its totient is φ = 1348038992712.

The previous prime is 1361255061337. The next prime is 1361255061379. The reversal of 1361255061371 is 1731605521631.

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-1361255061371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361255061379) 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, 6608034176 + ... + 6608034381.

It is an arithmetic number, because the mean of its divisors is an integer number (343617782508).

Almost surely, 2^{1361255061371} is an apocalyptic number.

1361255061371 is a deficient number, since it is larger than the sum of its proper divisors (13216068661).

1361255061371 is a wasteful number, since it uses less digits than its factorization.

1361255061371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13216068660.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 1361255061371 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-five million, sixty-one thousand, three hundred seventy-one".