427444766385 has 32 divisors (see below), whose sum is σ = 841737388800. Its totient is φ = 180372296448.

The previous prime is 427444766363. The next prime is 427444766389. The reversal of 427444766385 is 583667444724.

It is not a de Polignac number, because 427444766385 - 2⁶ = 427444766321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (427444766389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156571810 + ... + 156574539.

It is an arithmetic number, because the mean of its divisors is an integer number (26304293400).

Almost surely, 2^427444766385 is an apocalyptic number.

It is an amenable number.

427444766385 is a deficient number, since it is larger than the sum of its proper divisors (414292622415).

427444766385 is a wasteful number, since it uses less digits than its factorization.

427444766385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313146377.

The product of its digits is 108380160, while the sum is 60.

The spelling of 427444766385 in words is "four hundred twenty-seven billion, four hundred forty-four million, seven hundred sixty-six thousand, three hundred eighty-five".