45121433421 has 4 divisors (see below), whose sum is σ = 60161911232. Its totient is φ = 30080955612.

The previous prime is 45121433389. The next prime is 45121433501. The reversal of 45121433421 is 12433412154.

45121433421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 45121433421 - 2⁵ = 45121433389 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 (45121433321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7520238901 + ... + 7520238906.

It is an arithmetic number, because the mean of its divisors is an integer number (15040477808).

Almost surely, 2^45121433421 is an apocalyptic number.

It is an amenable number.

45121433421 is a deficient number, since it is larger than the sum of its proper divisors (15040477811).

45121433421 is a wasteful number, since it uses less digits than its factorization.

45121433421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15040477810.

The product of its digits is 11520, while the sum is 30.

Adding to 45121433421 its reverse (12433412154), we get a palindrome (57554845575).

The spelling of 45121433421 in words is "forty-five billion, one hundred twenty-one million, four hundred thirty-three thousand, four hundred twenty-one".