74122172736 has 112 divisors (see below), whose sum is σ = 207743779584. Its totient is φ = 23243636736.

The previous prime is 74122172731. The next prime is 74122172771. The reversal of 74122172736 is 63727122147.

It is a super-2 number, since 2×74122172736² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74122172731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10908156 + ... + 10914948.

Almost surely, 2^74122172736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74122172736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103871889792).

74122172736 is an abundant number, since it is smaller than the sum of its proper divisors (133621606848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74122172736 is a wasteful number, since it uses less digits than its factorization.

74122172736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10168 (or 10158 counting only the distinct ones).

The product of its digits is 197568, while the sum is 42.

The spelling of 74122172736 in words is "seventy-four billion, one hundred twenty-two million, one hundred seventy-two thousand, seven hundred thirty-six".