5661456356456 has 16 divisors (see below), whose sum is σ = 10724666037540. Its totient is φ = 2801545413120.

The previous prime is 5661456356429. The next prime is 5661456356459. The reversal of 5661456356456 is 6546536541665.

It can be written as a sum of positive squares in 2 ways, for example, as 4851755128900 + 809701227556 = 2202670^2 + 899834^2 .

It is not an unprimeable number, because it can be changed into a prime (5661456356459) 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, 3647844815 + ... + 3647846366.

Almost surely, 2^{5661456356456} is an apocalyptic number.

It is an amenable number.

5661456356456 is a deficient number, since it is larger than the sum of its proper divisors (5063209681084).

5661456356456 is a wasteful number, since it uses less digits than its factorization.

5661456356456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7295691284 (or 7295691280 counting only the distinct ones).

The product of its digits is 233280000, while the sum is 62.

The spelling of 5661456356456 in words is "five trillion, six hundred sixty-one billion, four hundred fifty-six million, three hundred fifty-six thousand, four hundred fifty-six".