74321472541 has 4 divisors (see below), whose sum is σ = 74640449052. Its totient is φ = 74002496032.

The previous prime is 74321472529. The next prime is 74321472647. The reversal of 74321472541 is 14527412347.

It is a happy number.

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 13979515225 + 60341957316 = 118235^2 + 245646^2 .

It is a cyclic number.

It is not a de Polignac number, because 74321472541 - 2⁷ = 74321472413 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74321472494 and 74321472503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74321478541) 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, 159487906 + ... + 159488371.

It is an arithmetic number, because the mean of its divisors is an integer number (18660112263).

Almost surely, 2^74321472541 is an apocalyptic number.

It is an amenable number.

74321472541 is a deficient number, since it is larger than the sum of its proper divisors (318976511).

74321472541 is a wasteful number, since it uses less digits than its factorization.

74321472541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318976510.

The product of its digits is 188160, while the sum is 40.

Adding to 74321472541 its reverse (14527412347), we get a palindrome (88848884888).

The spelling of 74321472541 in words is "seventy-four billion, three hundred twenty-one million, four hundred seventy-two thousand, five hundred forty-one".