45315444305521 has 16 divisors (see below), whose sum is σ = 51678720046800. Its totient is φ = 39363884679168.

The previous prime is 45315444305507. The next prime is 45315444305563. The reversal of 45315444305521 is 12550344451354.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1210385030625 + 44105059274896 = 1100175^2 + 6641164^2 .

It is a cyclic number.

It is not a de Polignac number, because 45315444305521 - 2⁵ = 45315444305489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45315444306521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11832336 + ... + 15186673.

It is an arithmetic number, because the mean of its divisors is an integer number (3229920002925).

Almost surely, 2^{45315444305521} is an apocalyptic number.

It is an amenable number.

45315444305521 is a deficient number, since it is larger than the sum of its proper divisors (6363275741279).

45315444305521 is a wasteful number, since it uses less digits than its factorization.

45315444305521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27026628.

The product of its (nonzero) digits is 2880000, while the sum is 46.

Adding to 45315444305521 its reverse (12550344451354), we get a palindrome (57865788756875).

The spelling of 45315444305521 in words is "forty-five trillion, three hundred fifteen billion, four hundred forty-four million, three hundred five thousand, five hundred twenty-one".