427188324021 has 16 divisors (see below), whose sum is σ = 580497356160. Its totient is φ = 279338829120.

The previous prime is 427188324007. The next prime is 427188324049. The reversal of 427188324021 is 120423881724.

It is not a de Polignac number, because 427188324021 - 2⁶ = 427188323957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427188324221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175635 + ... + 940863.

It is an arithmetic number, because the mean of its divisors is an integer number (36281084760).

Almost surely, 2^427188324021 is an apocalyptic number.

It is an amenable number.

427188324021 is a deficient number, since it is larger than the sum of its proper divisors (153309032139).

427188324021 is a wasteful number, since it uses less digits than its factorization.

427188324021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768796.

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 427188324021 in words is "four hundred twenty-seven billion, one hundred eighty-eight million, three hundred twenty-four thousand, twenty-one".