56420045243565 has 16 divisors (see below), whose sum is σ = 90345884416128. Its totient is φ = 30066086787776.

The previous prime is 56420045243563. The next prime is 56420045243609. The reversal of 56420045243565 is 56534254002465.

It is a cyclic number.

It is not a de Polignac number, because 56420045243565 - 2¹ = 56420045243563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56420045243563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1537731594 + ... + 1537768283.

It is an arithmetic number, because the mean of its divisors is an integer number (5646617776008).

Almost surely, 2^{56420045243565} is an apocalyptic number.

It is an amenable number.

56420045243565 is a deficient number, since it is larger than the sum of its proper divisors (33925839172563).

56420045243565 is a wasteful number, since it uses less digits than its factorization.

56420045243565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3075501108.

The product of its (nonzero) digits is 17280000, while the sum is 51.

The spelling of 56420045243565 in words is "fifty-six trillion, four hundred twenty billion, forty-five million, two hundred forty-three thousand, five hundred sixty-five".