427645562978 has 8 divisors (see below), whose sum is σ = 641507029968. Its totient is φ = 213809886324.

The previous prime is 427645562977. The next prime is 427645562987. The reversal of 427645562978 is 879265546724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (427645562977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6406076 + ... + 6472487.

It is an arithmetic number, because the mean of its divisors is an integer number (80188378746).

Almost surely, 2^427645562978 is an apocalyptic number.

427645562978 is a deficient number, since it is larger than the sum of its proper divisors (213861466990).

427645562978 is a wasteful number, since it uses less digits than its factorization.

427645562978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12895168.

The product of its digits is 203212800, while the sum is 65.

The spelling of 427645562978 in words is "four hundred twenty-seven billion, six hundred forty-five million, five hundred sixty-two thousand, nine hundred seventy-eight".