74220528233 has 4 divisors (see below), whose sum is σ = 74257883280. Its totient is φ = 74183173188.

The previous prime is 74220528101. The next prime is 74220528241. The reversal of 74220528233 is 33282502247.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33282502247 = 223 ⋅149248889.

It is a cyclic number.

It is not a de Polignac number, because 74220528233 - 2¹⁸ = 74220266089 is a prime.

It is a super-2 number, since 2×74220528233² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74220528433) 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, 18674543 + ... + 18678516.

It is an arithmetic number, because the mean of its divisors is an integer number (18564470820).

Almost surely, 2^74220528233 is an apocalyptic number.

It is an amenable number.

74220528233 is a deficient number, since it is larger than the sum of its proper divisors (37355047).

74220528233 is a wasteful number, since it uses less digits than its factorization.

74220528233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37355046.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 74220528233 in words is "seventy-four billion, two hundred twenty million, five hundred twenty-eight thousand, two hundred thirty-three".