427288427687 has 4 divisors (see below), whose sum is σ = 466132830216. Its totient is φ = 388444025160.

The previous prime is 427288427653. The next prime is 427288427693. The reversal of 427288427687 is 786724882724.

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 427288427687 - 2⁸ = 427288427431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427288427087) 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, 19422201248 + ... + 19422201269.

It is an arithmetic number, because the mean of its divisors is an integer number (116533207554).

Almost surely, 2^427288427687 is an apocalyptic number.

427288427687 is a deficient number, since it is larger than the sum of its proper divisors (38844402529).

427288427687 is a wasteful number, since it uses less digits than its factorization.

427288427687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38844402528.

The product of its digits is 134873088, while the sum is 65.

The spelling of 427288427687 in words is "four hundred twenty-seven billion, two hundred eighty-eight million, four hundred twenty-seven thousand, six hundred eighty-seven".