45382121021 has 8 divisors (see below), whose sum is σ = 46401444864. Its totient is φ = 44365036720.

The previous prime is 45382121011. The next prime is 45382121033. The reversal of 45382121021 is 12012128354.

It is a happy number.

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 45382121021 - 2¹⁰ = 45382119997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45382121011) 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 7 ways as a sum of consecutive naturals, for example, 518870 + ... + 599991.

It is an arithmetic number, because the mean of its divisors is an integer number (5800180608).

Almost surely, 2^45382121021 is an apocalyptic number.

It is an amenable number.

45382121021 is a deficient number, since it is larger than the sum of its proper divisors (1019323843).

45382121021 is a wasteful number, since it uses less digits than its factorization.

45382121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119771.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 45382121021 its reverse (12012128354), we get a palindrome (57394249375).

The spelling of 45382121021 in words is "forty-five billion, three hundred eighty-two million, one hundred twenty-one thousand, twenty-one".