427851129161 has 4 divisors (see below), whose sum is σ = 446453352192. Its totient is φ = 409248906132.

The previous prime is 427851129091. The next prime is 427851129169. The reversal of 427851129161 is 161921158724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427851129161 - 2¹⁰ = 427851128137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427851129169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9301111481 + ... + 9301111526.

It is an arithmetic number, because the mean of its divisors is an integer number (111613338048).

Almost surely, 2^427851129161 is an apocalyptic number.

It is an amenable number.

427851129161 is a deficient number, since it is larger than the sum of its proper divisors (18602223031).

427851129161 is a wasteful number, since it uses less digits than its factorization.

427851129161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18602223030.

The product of its digits is 241920, while the sum is 47.

The spelling of 427851129161 in words is "four hundred twenty-seven billion, eight hundred fifty-one million, one hundred twenty-nine thousand, one hundred sixty-one".