74128947148 has 24 divisors (see below), whose sum is σ = 131019368480. Its totient is φ = 36695030400.

The previous prime is 74128947133. The next prime is 74128947149. The reversal of 74128947148 is 84174982147.

It is not an unprimeable number, because it can be changed into a prime (74128947149) 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, 1709398 + ... + 1752226.

Almost surely, 2^74128947148 is an apocalyptic number.

It is an amenable number.

74128947148 is a deficient number, since it is larger than the sum of its proper divisors (56890421332).

74128947148 is a wasteful number, since it uses less digits than its factorization.

74128947148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47137 (or 47135 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

The spelling of 74128947148 in words is "seventy-four billion, one hundred twenty-eight million, nine hundred forty-seven thousand, one hundred forty-eight".