220685376824847 has 96 divisors (see below), whose sum is σ = 367492953784320. Its totient is φ = 126302576811840.

The previous prime is 220685376824821. The next prime is 220685376824897. The reversal of 220685376824847 is 748428673586022.

It is a happy number.

220685376824847 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 8 + 5 + 376 + 8 + 248 + 4 + 7 = 666.

220685376824847 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220685376824847 - 2¹² = 220685376820751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220685376824807) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2205855208 + ... + 2205955250.

It is an arithmetic number, because the mean of its divisors is an integer number (3828051601920).

Almost surely, 2^{220685376824847} is an apocalyptic number.

220685376824847 is a deficient number, since it is larger than the sum of its proper divisors (146807576959473).

220685376824847 is a wasteful number, since it uses less digits than its factorization.

220685376824847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112425 (or 112422 counting only the distinct ones).

The product of its (nonzero) digits is 1734082560, while the sum is 72.

The spelling of 220685376824847 in words is "two hundred twenty trillion, six hundred eighty-five billion, three hundred seventy-six million, eight hundred twenty-four thousand, eight hundred forty-seven".