945884459521 has 4 divisors (see below), whose sum is σ = 947319793200. Its totient is φ = 944449125844.

The previous prime is 945884459519. The next prime is 945884459537. The reversal of 945884459521 is 125954488549.

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 945884459521 - 2¹ = 945884459519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945884459621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717665851 + ... + 717667168.

It is an arithmetic number, because the mean of its divisors is an integer number (236829948300).

Almost surely, 2^945884459521 is an apocalyptic number.

It is an amenable number.

945884459521 is a deficient number, since it is larger than the sum of its proper divisors (1435333679).

945884459521 is a wasteful number, since it uses less digits than its factorization.

945884459521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435333678.

The product of its digits is 82944000, while the sum is 64.

The spelling of 945884459521 in words is "nine hundred forty-five billion, eight hundred eighty-four million, four hundred fifty-nine thousand, five hundred twenty-one".