2443256456565 has 16 divisors (see below), whose sum is σ = 3909856946688. Its totient is φ = 1302854571456.

The previous prime is 2443256456521. The next prime is 2443256456573. The reversal of 2443256456565 is 5656546523442.

It is not a de Polignac number, because 2443256456565 - 2¹⁴ = 2443256440181 is a prime.

It is a super-2 number, since 2×2443256456565² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13377442 + ... + 13558851.

It is an arithmetic number, because the mean of its divisors is an integer number (244366059168).

Almost surely, 2^{2443256456565} is an apocalyptic number.

It is an amenable number.

2443256456565 is a deficient number, since it is larger than the sum of its proper divisors (1466600490123).

2443256456565 is a wasteful number, since it uses less digits than its factorization.

2443256456565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26942348.

The product of its digits is 103680000, while the sum is 57.

The spelling of 2443256456565 in words is "two trillion, four hundred forty-three billion, two hundred fifty-six million, four hundred fifty-six thousand, five hundred sixty-five".