2455665543 has 48 divisors (see below), whose sum is σ = 3746330016. Its totient is φ = 1548046080.

The previous prime is 2455665529. The next prime is 2455665547. The reversal of 2455665543 is 3455665542.

2455665543 is a `hidden beast` number, since 2 + 4 + 556 + 6 + 55 + 43 = 666.

It is not a de Polignac number, because 2455665543 - 2⁸ = 2455665287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455665547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4538853 + ... + 4539393.

It is an arithmetic number, because the mean of its divisors is an integer number (78048542).

Almost surely, 2^2455665543 is an apocalyptic number.

2455665543 is a deficient number, since it is larger than the sum of its proper divisors (1290664473).

2455665543 is a wasteful number, since it uses less digits than its factorization.

2455665543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 941 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

The square root of 2455665543 is about 49554.6722620582. The cubic root of 2455665543 is about 1349.1380951031.

Subtracting 2455665543 from its reverse (3455665542), we obtain a palindrome (999999999).

The spelling of 2455665543 in words is "two billion, four hundred fifty-five million, six hundred sixty-five thousand, five hundred forty-three".