1361264574561 has 8 divisors (see below), whose sum is σ = 1815559791360. Its totient is φ = 907239537072.

The previous prime is 1361264574559. The next prime is 1361264574599. The reversal of 1361264574561 is 1654754621631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1361264574561 - 2¹ = 1361264574559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361264574521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67533070 + ... + 67553223.

It is an arithmetic number, because the mean of its divisors is an integer number (226944973920).

Almost surely, 2^{1361264574561} is an apocalyptic number.

It is an amenable number.

1361264574561 is a deficient number, since it is larger than the sum of its proper divisors (454295216799).

1361264574561 is a wasteful number, since it uses less digits than its factorization.

1361264574561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135089655.

The product of its digits is 3628800, while the sum is 51.

The spelling of 1361264574561 in words is "one trillion, three hundred sixty-one billion, two hundred sixty-four million, five hundred seventy-four thousand, five hundred sixty-one".