74451135421 has 8 divisors (see below), whose sum is σ = 80222444064. Its totient is φ = 68686155120.

The previous prime is 74451135419. The next prime is 74451135431. The reversal of 74451135421 is 12453115447.

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 74451135421 - 2¹ = 74451135419 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 (74451135431) 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, 1557631 + ... + 1604716.

It is an arithmetic number, because the mean of its divisors is an integer number (10027805508).

Almost surely, 2^74451135421 is an apocalyptic number.

It is an amenable number.

74451135421 is a deficient number, since it is larger than the sum of its proper divisors (5771308643).

74451135421 is a wasteful number, since it uses less digits than its factorization.

74451135421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164171.

The product of its digits is 67200, while the sum is 37.

The spelling of 74451135421 in words is "seventy-four billion, four hundred fifty-one million, one hundred thirty-five thousand, four hundred twenty-one".