427332533891 has 4 divisors (see below), whose sum is σ = 438882061872. Its totient is φ = 415783005912.

The previous prime is 427332533879. The next prime is 427332533897. The reversal of 427332533891 is 198335233724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427332533891 - 2²² = 427328339587 is a prime.

It is a super-2 number, since 2×427332533891² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427332533897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5774763935 + ... + 5774764008.

It is an arithmetic number, because the mean of its divisors is an integer number (109720515468).

Almost surely, 2^427332533891 is an apocalyptic number.

427332533891 is a deficient number, since it is larger than the sum of its proper divisors (11549527981).

427332533891 is a wasteful number, since it uses less digits than its factorization.

427332533891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11549527980.

The product of its digits is 3265920, while the sum is 50.

The spelling of 427332533891 in words is "four hundred twenty-seven billion, three hundred thirty-two million, five hundred thirty-three thousand, eight hundred ninety-one".