5661456356393 has 4 divisors (see below), whose sum is σ = 5661768317700. Its totient is φ = 5661144395088.

The previous prime is 5661456356377. The next prime is 5661456356407. The reversal of 5661456356393 is 3936536541665.

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 3680208681769 + 1981247674624 = 1918387^2 + 1407568^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661456356393 - 2⁴ = 5661456356377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661456350393) 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, 155953430 + ... + 155989727.

It is an arithmetic number, because the mean of its divisors is an integer number (1415442079425).

Almost surely, 2^{5661456356393} is an apocalyptic number.

It is an amenable number.

5661456356393 is a deficient number, since it is larger than the sum of its proper divisors (311961307).

5661456356393 is a wasteful number, since it uses less digits than its factorization.

5661456356393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311961306.

The product of its digits is 157464000, while the sum is 62.

The spelling of 5661456356393 in words is "five trillion, six hundred sixty-one billion, four hundred fifty-six million, three hundred fifty-six thousand, three hundred ninety-three".