74823442138 has 32 divisors (see below), whose sum is σ = 119416147200. Its totient is φ = 35062507584.

The previous prime is 74823442121. The next prime is 74823442139. The reversal of 74823442138 is 83124432847.

It is a super-2 number, since 2×74823442138² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74823442139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1338831 + ... + 1393597.

It is an arithmetic number, because the mean of its divisors is an integer number (3731754600).

Almost surely, 2^74823442138 is an apocalyptic number.

74823442138 is a deficient number, since it is larger than the sum of its proper divisors (44592705062).

74823442138 is a wasteful number, since it uses less digits than its factorization.

74823442138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55174.

The product of its digits is 1032192, while the sum is 46.

It can be divided in two parts, 74823 and 442138, that added together give a square (516961 = 719²).

The spelling of 74823442138 in words is "seventy-four billion, eight hundred twenty-three million, four hundred forty-two thousand, one hundred thirty-eight".