74551189441 has 4 divisors (see below), whose sum is σ = 74848206384. Its totient is φ = 74254172500.

The previous prime is 74551189429. The next prime is 74551189469. The reversal of 74551189441 is 14498115547.

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: 14498115547 = 19 ⋅763058713.

It is a cyclic number.

It is not a de Polignac number, because 74551189441 - 2¹⁷ = 74551058369 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74551109441) 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, 148508095 + ... + 148508596.

It is an arithmetic number, because the mean of its divisors is an integer number (18712051596).

Almost surely, 2^74551189441 is an apocalyptic number.

It is an amenable number.

74551189441 is a deficient number, since it is larger than the sum of its proper divisors (297016943).

74551189441 is a wasteful number, since it uses less digits than its factorization.

74551189441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297016942.

The product of its digits is 806400, while the sum is 49.

The spelling of 74551189441 in words is "seventy-four billion, five hundred fifty-one million, one hundred eighty-nine thousand, four hundred forty-one".