409427741881 has 4 divisors (see below), whose sum is σ = 409470395764. Its totient is φ = 409385088000.

The previous prime is 409427741857. The next prime is 409427741911. The reversal of 409427741881 is 188147724904.

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

It can be written as a sum of positive squares in 2 ways, for example, as 245678835600 + 163748906281 = 495660^2 + 404659^2 .

It is a cyclic number.

It is not a de Polignac number, because 409427741881 - 2²⁷ = 409293524153 is a prime.

It is a super-2 number, since 2×409427741881² (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 (409427741581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21312540 + ... + 21331741.

It is an arithmetic number, because the mean of its divisors is an integer number (102367598941).

Almost surely, 2^409427741881 is an apocalyptic number.

It is an amenable number.

409427741881 is a deficient number, since it is larger than the sum of its proper divisors (42653883).

409427741881 is an equidigital number, since it uses as much as digits as its factorization.

409427741881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42653882.

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 409427741881 in words is "four hundred nine billion, four hundred twenty-seven million, seven hundred forty-one thousand, eight hundred eighty-one".