74555610156480 has 448 divisors, whose sum is σ = 250323940661760. Its totient is φ = 18748235759616.

The previous prime is 74555610156449. The next prime is 74555610156487. The reversal of 74555610156480 is 8465101655547.

It is a happy number.

It is a super-3 number, since 3×74555610156480³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 74555610156480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74555610156487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4686960687 + ... + 4686976593.

It is an arithmetic number, because the mean of its divisors is an integer number (558758796120).

Almost surely, 2^{74555610156480} 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 74555610156480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125161970330880).

74555610156480 is an abundant number, since it is smaller than the sum of its proper divisors (175768330505280).

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

74555610156480 is a wasteful number, since it uses less digits than its factorization.

74555610156480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17116 (or 17106 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 57.

The spelling of 74555610156480 in words is "seventy-four trillion, five hundred fifty-five billion, six hundred ten million, one hundred fifty-six thousand, four hundred eighty".