465965617381 has 4 divisors (see below), whose sum is σ = 508326128064. Its totient is φ = 423605106700.

The previous prime is 465965617373. The next prime is 465965617441. The reversal of 465965617381 is 183716569564.

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 not a de Polignac number, because 465965617381 - 2³ = 465965617373 is a prime.

It is a super-2 number, since 2×465965617381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (465965617181) 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, 21180255325 + ... + 21180255346.

It is an arithmetic number, because the mean of its divisors is an integer number (127081532016).

Almost surely, 2^465965617381 is an apocalyptic number.

It is an amenable number.

465965617381 is a deficient number, since it is larger than the sum of its proper divisors (42360510683).

465965617381 is a wasteful number, since it uses less digits than its factorization.

465965617381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42360510682.

The product of its digits is 32659200, while the sum is 61.

The spelling of 465965617381 in words is "four hundred sixty-five billion, nine hundred sixty-five million, six hundred seventeen thousand, three hundred eighty-one".