874643611818780 has 384 divisors, whose sum is σ = 2779422186240000. Its totient is φ = 228298333593600.

The previous prime is 874643611818749. The next prime is 874643611818787. The reversal of 874643611818780 is 87818116346478.

874643611818780 is a `hidden beast` number, since 8 + 7 + 4 + 6 + 4 + 361 + 1 + 8 + 187 + 80 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 874643611818699 and 874643611818708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874643611818787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4861769271 + ... + 4861949169.

It is an arithmetic number, because the mean of its divisors is an integer number (7238078610000).

Almost surely, 2^{874643611818780} 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 874643611818780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389711093120000).

874643611818780 is an abundant number, since it is smaller than the sum of its proper divisors (1904778574421220).

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

874643611818780 is a wasteful number, since it uses less digits than its factorization.

874643611818780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181034 (or 181026 counting only the distinct ones).

The product of its (nonzero) digits is 346816512, while the sum is 72.

The spelling of 874643611818780 in words is "eight hundred seventy-four trillion, six hundred forty-three billion, six hundred eleven million, eight hundred eighteen thousand, seven hundred eighty".