427545376221 has 16 divisors (see below), whose sum is σ = 604490390784. Its totient is φ = 267865135104.

The previous prime is 427545376211. The next prime is 427545376231. The reversal of 427545376221 is 122673545724.

It is an interprime number because it is at equal distance from previous prime (427545376211) and next prime (427545376231).

It is not a de Polignac number, because 427545376221 - 2⁹ = 427545375709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427545376211) 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, 6193941 + ... + 6262586.

It is an arithmetic number, because the mean of its divisors is an integer number (37780649424).

Almost surely, 2^427545376221 is an apocalyptic number.

It is an amenable number.

427545376221 is a deficient number, since it is larger than the sum of its proper divisors (176945014563).

427545376221 is a wasteful number, since it uses less digits than its factorization.

427545376221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12457220.

The product of its digits is 2822400, while the sum is 48.

The spelling of 427545376221 in words is "four hundred twenty-seven billion, five hundred forty-five million, three hundred seventy-six thousand, two hundred twenty-one".