74642964481 has 4 divisors (see below), whose sum is σ = 74656538964. Its totient is φ = 74629390000.

The previous prime is 74642964443. The next prime is 74642964491. The reversal of 74642964481 is 18446924647.

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 66882235456 + 7760729025 = 258616^2 + 88095^2 .

It is a cyclic number.

It is not a de Polignac number, because 74642964481 - 2²⁹ = 74106093569 is a prime.

It is a super-2 number, since 2×74642964481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74642964491) 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, 6778990 + ... + 6789991.

It is an arithmetic number, because the mean of its divisors is an integer number (18664134741).

Almost surely, 2^74642964481 is an apocalyptic number.

It is an amenable number.

74642964481 is a deficient number, since it is larger than the sum of its proper divisors (13574483).

74642964481 is a wasteful number, since it uses less digits than its factorization.

74642964481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13574482.

The product of its digits is 9289728, while the sum is 55.

The spelling of 74642964481 in words is "seventy-four billion, six hundred forty-two million, nine hundred sixty-four thousand, four hundred eighty-one".