427738502543 has 4 divisors (see below), whose sum is σ = 466623820968. Its totient is φ = 388853184120.

The previous prime is 427738502533. The next prime is 427738502561. The reversal of 427738502543 is 345205837724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427738502543 - 2²⁰ = 427737453967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 427738502491 and 427738502500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427738502533) 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, 19442659196 + ... + 19442659217.

It is an arithmetic number, because the mean of its divisors is an integer number (116655955242).

Almost surely, 2^427738502543 is an apocalyptic number.

427738502543 is a deficient number, since it is larger than the sum of its proper divisors (38885318425).

427738502543 is a wasteful number, since it uses less digits than its factorization.

427738502543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38885318424.

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 427738502543 in words is "four hundred twenty-seven billion, seven hundred thirty-eight million, five hundred two thousand, five hundred forty-three".