847361666844 has 576 divisors, whose sum is σ = 2878830968832. Its totient is φ = 203416012800.

The previous prime is 847361666821. The next prime is 847361666933. The reversal of 847361666844 is 448666163748.

It is a happy number.

847361666844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1549106979 + ... + 1549107525.

It is an arithmetic number, because the mean of its divisors is an integer number (4997970432).

Almost surely, 2^847361666844 is an apocalyptic number.

847361666844 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 847361666844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439415484416).

847361666844 is an abundant number, since it is smaller than the sum of its proper divisors (2031469301988).

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

847361666844 is a wasteful number, since it uses less digits than its factorization.

847361666844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1121 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 63.

The spelling of 847361666844 in words is "eight hundred forty-seven billion, three hundred sixty-one million, six hundred sixty-six thousand, eight hundred forty-four".