427040715181 has 4 divisors (see below), whose sum is σ = 428742072864. Its totient is φ = 425339357500.

The previous prime is 427040715163. The next prime is 427040715209. The reversal of 427040715181 is 181517040724.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-427040715181 is a prime.

It is a super-2 number, since 2×427040715181² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427040715781) 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, 850678465 + ... + 850678966.

It is an arithmetic number, because the mean of its divisors is an integer number (107185518216).

Almost surely, 2^427040715181 is an apocalyptic number.

It is an amenable number.

427040715181 is a deficient number, since it is larger than the sum of its proper divisors (1701357683).

427040715181 is a wasteful number, since it uses less digits than its factorization.

427040715181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701357682.

The product of its (nonzero) digits is 62720, while the sum is 40.

The spelling of 427040715181 in words is "four hundred twenty-seven billion, forty million, seven hundred fifteen thousand, one hundred eighty-one".