45405200321 has 4 divisors (see below), whose sum is σ = 48897908052. Its totient is φ = 41912492592.

The previous prime is 45405200303. The next prime is 45405200389. The reversal of 45405200321 is 12300250454.

It is a happy number.

45405200321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16399363600 + 29005836721 = 128060^2 + 170311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45405200321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45405200921) 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, 1746353846 + ... + 1746353871.

It is an arithmetic number, because the mean of its divisors is an integer number (12224477013).

Almost surely, 2^45405200321 is an apocalyptic number.

It is an amenable number.

45405200321 is a deficient number, since it is larger than the sum of its proper divisors (3492707731).

45405200321 is a wasteful number, since it uses less digits than its factorization.

45405200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492707730.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 45405200321 its reverse (12300250454), we get a palindrome (57705450775).

The spelling of 45405200321 in words is "forty-five billion, four hundred five million, two hundred thousand, three hundred twenty-one".