74441218477 has 4 divisors (see below), whose sum is σ = 74447083036. Its totient is φ = 74435353920.

The previous prime is 74441218463. The next prime is 74441218483. The reversal of 74441218477 is 77481214447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68668106116 + 5773112361 = 262046^2 + 75981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74441218477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74441218477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74441218877) 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, 2913198 + ... + 2938639.

It is an arithmetic number, because the mean of its divisors is an integer number (18611770759).

Almost surely, 2^74441218477 is an apocalyptic number.

It is an amenable number.

74441218477 is a deficient number, since it is larger than the sum of its proper divisors (5864559).

74441218477 is a wasteful number, since it uses less digits than its factorization.

74441218477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864558.

The product of its digits is 1404928, while the sum is 49.

The spelling of 74441218477 in words is "seventy-four billion, four hundred forty-one million, two hundred eighteen thousand, four hundred seventy-seven".