74978461141 has 4 divisors (see below), whose sum is σ = 75127524192. Its totient is φ = 74829398092.

The previous prime is 74978461123. The next prime is 74978461183. The reversal of 74978461141 is 14116487947.

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: 14116487947 = 839 ⋅16825373.

It is a cyclic number.

It is not a de Polignac number, because 74978461141 - 2²⁵ = 74944906709 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 (74978461241) 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, 74530771 + ... + 74531776.

It is an arithmetic number, because the mean of its divisors is an integer number (18781881048).

Almost surely, 2^74978461141 is an apocalyptic number.

It is an amenable number.

74978461141 is a deficient number, since it is larger than the sum of its proper divisors (149063051).

74978461141 is a wasteful number, since it uses less digits than its factorization.

74978461141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149063050.

The product of its digits is 1354752, while the sum is 52.

The spelling of 74978461141 in words is "seventy-four billion, nine hundred seventy-eight million, four hundred sixty-one thousand, one hundred forty-one".