45434431021 has 8 divisors (see below), whose sum is σ = 51950177280. Its totient is φ = 38924963088.

The previous prime is 45434431001. The next prime is 45434431073. The reversal of 45434431021 is 12013443454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45434431021 - 2¹³ = 45434422829 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 (45434431001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554061 + ... + 1583026.

It is an arithmetic number, because the mean of its divisors is an integer number (6493772160).

Almost surely, 2^45434431021 is an apocalyptic number.

It is an amenable number.

45434431021 is a deficient number, since it is larger than the sum of its proper divisors (6515746259).

45434431021 is a wasteful number, since it uses less digits than its factorization.

45434431021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139163.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 45434431021 its reverse (12013443454), we get a palindrome (57447874475).

The spelling of 45434431021 in words is "forty-five billion, four hundred thirty-four million, four hundred thirty-one thousand, twenty-one".