43553674421 has 8 divisors (see below), whose sum is σ = 44175193920. Its totient is φ = 42932827872.

The previous prime is 43553674379. The next prime is 43553674459. The reversal of 43553674421 is 12447635534.

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 43553674421 - 2⁶ = 43553674357 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 (43553677421) 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, 37151 + ... + 297468.

It is an arithmetic number, because the mean of its divisors is an integer number (5521899240).

Almost surely, 2^43553674421 is an apocalyptic number.

It is an amenable number.

43553674421 is a deficient number, since it is larger than the sum of its proper divisors (621519499).

43553674421 is a wasteful number, since it uses less digits than its factorization.

43553674421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336475.

The product of its digits is 1209600, while the sum is 44.

The spelling of 43553674421 in words is "forty-three billion, five hundred fifty-three million, six hundred seventy-four thousand, four hundred twenty-one".