405561463427 has 4 divisors (see below), whose sum is σ = 405933198216. Its totient is φ = 405189728640.

The previous prime is 405561463379. The next prime is 405561463453. The reversal of 405561463427 is 724364165504.

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 405561463427 - 2¹⁴ = 405561447043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405561463327) 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, 185865758 + ... + 185867939.

It is an arithmetic number, because the mean of its divisors is an integer number (101483299554).

Almost surely, 2^405561463427 is an apocalyptic number.

405561463427 is a deficient number, since it is larger than the sum of its proper divisors (371734789).

405561463427 is a wasteful number, since it uses less digits than its factorization.

405561463427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371734788.

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 405561463427 in words is "four hundred five billion, five hundred sixty-one million, four hundred sixty-three thousand, four hundred twenty-seven".