65742423543 has 24 divisors (see below), whose sum is σ = 101198343168. Its totient is φ = 41030726352.

The previous prime is 65742423533. The next prime is 65742423559. The reversal of 65742423543 is 34532424756.

65742423543 is a `hidden beast` number, since 6 + 57 + 4 + 242 + 354 + 3 = 666.

It is not a de Polignac number, because 65742423543 - 2¹⁸ = 65742161399 is a prime.

It is a super-3 number, since 3×65742423543³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65742423533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3368955 + ... + 3388412.

It is an arithmetic number, because the mean of its divisors is an integer number (4216597632).

Almost surely, 2^65742423543 is an apocalyptic number.

65742423543 is a deficient number, since it is larger than the sum of its proper divisors (35455919625).

65742423543 is a wasteful number, since it uses less digits than its factorization.

65742423543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757443 (or 6757440 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 45.

The spelling of 65742423543 in words is "sixty-five billion, seven hundred forty-two million, four hundred twenty-three thousand, five hundred forty-three".