465920138881 has 8 divisors (see below), whose sum is σ = 504799932384. Its totient is φ = 428315092800.

The previous prime is 465920138857. The next prime is 465920138909. The reversal of 465920138881 is 188831029564.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 465920138881 - 2¹⁷ = 465920007809 is a prime.

It is a super-2 number, since 2×465920138881² (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 (465920138851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318686095 + ... + 318687556.

It is an arithmetic number, because the mean of its divisors is an integer number (63099991548).

Almost surely, 2^465920138881 is an apocalyptic number.

It is an amenable number.

465920138881 is a deficient number, since it is larger than the sum of its proper divisors (38879793503).

465920138881 is a wasteful number, since it uses less digits than its factorization.

465920138881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637373711.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 465920138881 in words is "four hundred sixty-five billion, nine hundred twenty million, one hundred thirty-eight thousand, eight hundred eighty-one".