848815566381 has 12 divisors (see below), whose sum is σ = 1268345099580. Its totient is φ = 546364042560.

The previous prime is 848815566373. The next prime is 848815566383. The reversal of 848815566381 is 183665518848.

848815566381 is a `hidden beast` number, since 8 + 48 + 8 + 1 + 556 + 6 + 38 + 1 = 666.

848815566381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 223227900900 + 625587665481 = 472470^2 + 790941^2 .

It is not a de Polignac number, because 848815566381 - 2³ = 848815566373 is a prime.

It is a super-2 number, since 2×848815566381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (848815566383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1626083200 + ... + 1626083721.

It is an arithmetic number, because the mean of its divisors is an integer number (105695424965).

Almost surely, 2^848815566381 is an apocalyptic number.

It is an amenable number.

848815566381 is a deficient number, since it is larger than the sum of its proper divisors (419529533199).

848815566381 is a wasteful number, since it uses less digits than its factorization.

848815566381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252166956 (or 3252166953 counting only the distinct ones).

The product of its digits is 44236800, while the sum is 63.

The spelling of 848815566381 in words is "eight hundred forty-eight billion, eight hundred fifteen million, five hundred sixty-six thousand, three hundred eighty-one".