45537443421 has 4 divisors (see below), whose sum is σ = 60716591232. Its totient is φ = 30358295612.

The previous prime is 45537443407. The next prime is 45537443437. The reversal of 45537443421 is 12434473554.

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 45537443421 - 2⁷ = 45537443293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45537442421) 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, 7589573901 + ... + 7589573906.

It is an arithmetic number, because the mean of its divisors is an integer number (15179147808).

Almost surely, 2^45537443421 is an apocalyptic number.

It is an amenable number.

45537443421 is a deficient number, since it is larger than the sum of its proper divisors (15179147811).

45537443421 is a wasteful number, since it uses less digits than its factorization.

45537443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15179147810.

The product of its digits is 806400, while the sum is 42.

The spelling of 45537443421 in words is "forty-five billion, five hundred thirty-seven million, four hundred forty-three thousand, four hundred twenty-one".