74370780180 has 120 divisors (see below), whose sum is σ = 233893581768. Its totient is φ = 19782081792.

The previous prime is 74370780139. The next prime is 74370780181. The reversal of 74370780180 is 8108707347.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20026778256 + 54344001924 = 141516^2 + 233118^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74370780181) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 585322 + ... + 700958.

Almost surely, 2^74370780180 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 74370780180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116946790884).

74370780180 is an abundant number, since it is smaller than the sum of its proper divisors (159522801588).

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

74370780180 is a wasteful number, since it uses less digits than its factorization.

74370780180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116055 (or 116044 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The spelling of 74370780180 in words is "seventy-four billion, three hundred seventy million, seven hundred eighty thousand, one hundred eighty".