450013664431 has 4 divisors (see below), whose sum is σ = 469579475952. Its totient is φ = 430447852912.

The previous prime is 450013664423. The next prime is 450013664437. The reversal of 450013664431 is 134466310054.

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

It is a cyclic number.

It is not a de Polignac number, because 450013664431 - 2³ = 450013664423 is a prime.

It is a super-2 number, since 2×450013664431² (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 (450013664437) 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, 9782905726 + ... + 9782905771.

It is an arithmetic number, because the mean of its divisors is an integer number (117394868988).

Almost surely, 2^450013664431 is an apocalyptic number.

450013664431 is a deficient number, since it is larger than the sum of its proper divisors (19565811521).

450013664431 is a wasteful number, since it uses less digits than its factorization.

450013664431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19565811520.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 450013664431 its reverse (134466310054), we get a palindrome (584479974485).

The spelling of 450013664431 in words is "four hundred fifty billion, thirteen million, six hundred sixty-four thousand, four hundred thirty-one".