427645820138 has 16 divisors (see below), whose sum is σ = 648079548480. Its totient is φ = 211630295136.

The previous prime is 427645820111. The next prime is 427645820141. The reversal of 427645820138 is 831028546724.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2669768 + ... + 2825411.

It is an arithmetic number, because the mean of its divisors is an integer number (40504971780).

Almost surely, 2^427645820138 is an apocalyptic number.

427645820138 is a deficient number, since it is larger than the sum of its proper divisors (220433728342).

427645820138 is a wasteful number, since it uses less digits than its factorization.

427645820138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495581.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 427645820138 in words is "four hundred twenty-seven billion, six hundred forty-five million, eight hundred twenty thousand, one hundred thirty-eight".