45032215021 has 4 divisors (see below), whose sum is σ = 45097385344. Its totient is φ = 44967044700.

The previous prime is 45032214989. The next prime is 45032215031. The reversal of 45032215021 is 12051223054.

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 45032215021 - 2⁵ = 45032214989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45032215031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32584125 + ... + 32585506.

It is an arithmetic number, because the mean of its divisors is an integer number (11274346336).

Almost surely, 2^45032215021 is an apocalyptic number.

It is an amenable number.

45032215021 is a deficient number, since it is larger than the sum of its proper divisors (65170323).

45032215021 is an equidigital number, since it uses as much as digits as its factorization.

45032215021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65170322.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 45032215021 its reverse (12051223054), we get a palindrome (57083438075).

The spelling of 45032215021 in words is "forty-five billion, thirty-two million, two hundred fifteen thousand, twenty-one".