74040173020 has 96 divisors (see below), whose sum is σ = 173471155200. Its totient is φ = 26319072000.

The previous prime is 74040173017. The next prime is 74040173021. The reversal of 74040173020 is 2037104047.

It is a self number, because there is not a number n which added to its sum of digits gives 74040173020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74040173021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1734291 + ... + 1776469.

It is an arithmetic number, because the mean of its divisors is an integer number (1806991200).

Almost surely, 2^74040173020 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 74040173020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86735577600).

74040173020 is an abundant number, since it is smaller than the sum of its proper divisors (99430982180).

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

74040173020 is a wasteful number, since it uses less digits than its factorization.

74040173020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42379 (or 42377 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

Adding to 74040173020 its reverse (2037104047), we get a palindrome (76077277067).

The spelling of 74040173020 in words is "seventy-four billion, forty million, one hundred seventy-three thousand, twenty".