74115548144 has 80 divisors (see below), whose sum is σ = 157757760000. Its totient is φ = 33452213760.

The previous prime is 74115548141. The next prime is 74115548149. The reversal of 74115548144 is 44184551147.

It is a happy number.

It is a super-2 number, since 2×74115548144² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 74115548095 and 74115548104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74115548141) 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, 15939932 + ... + 15944580.

It is an arithmetic number, because the mean of its divisors is an integer number (1971972000).

Almost surely, 2^74115548144 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 74115548144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78878880000).

74115548144 is an abundant number, since it is smaller than the sum of its proper divisors (83642211856).

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

74115548144 is a wasteful number, since it uses less digits than its factorization.

74115548144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286 (or 5280 counting only the distinct ones).

The product of its digits is 358400, while the sum is 44.

It can be divided in two parts, 7411 and 5548144, that added together give a palindrome (5555555).

The spelling of 74115548144 in words is "seventy-four billion, one hundred fifteen million, five hundred forty-eight thousand, one hundred forty-four".