74441642679 has 8 divisors (see below), whose sum is σ = 110283915120. Its totient is φ = 49627761768.

The previous prime is 74441642677. The next prime is 74441642683. The reversal of 74441642679 is 97624614447.

It is a happy number.

74441642679 is a `hidden beast` number, since 74 + 441 + 64 + 2 + 6 + 79 = 666.

It is not a de Polignac number, because 74441642679 - 2¹ = 74441642677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74441642677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1378548912 + ... + 1378548965.

It is an arithmetic number, because the mean of its divisors is an integer number (13785489390).

Almost surely, 2^74441642679 is an apocalyptic number.

74441642679 is a deficient number, since it is larger than the sum of its proper divisors (35842272441).

74441642679 is a wasteful number, since it uses less digits than its factorization.

74441642679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757097886 (or 2757097880 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 74441642679 in words is "seventy-four billion, four hundred forty-one million, six hundred forty-two thousand, six hundred seventy-nine".