74133632021 has 4 divisors (see below), whose sum is σ = 74288400000. Its totient is φ = 73978864044.

The previous prime is 74133631981. The next prime is 74133632029. The reversal of 74133632021 is 12023633147.

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 74133632021 - 2¹⁰ = 74133630997 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 (74133632029) 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, 77383271 + ... + 77384228.

It is an arithmetic number, because the mean of its divisors is an integer number (18572100000).

Almost surely, 2^74133632021 is an apocalyptic number.

It is an amenable number.

74133632021 is a deficient number, since it is larger than the sum of its proper divisors (154767979).

74133632021 is a wasteful number, since it uses less digits than its factorization.

74133632021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154767978.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 74133632021 in words is "seventy-four billion, one hundred thirty-three million, six hundred thirty-two thousand, twenty-one".