581163860070 has 80 divisors (see below), whose sum is σ = 1562838536160. Its totient is φ = 154961807616.

The previous prime is 581163860063. The next prime is 581163860071. The reversal of 581163860070 is 70068361185.

581163860070 is a `hidden beast` number, since 5 + 8 + 1 + 1 + 6 + 38 + 600 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 581163859998 and 581163860025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (581163860071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9968766 + ... + 10026894.

It is an arithmetic number, because the mean of its divisors is an integer number (19535481702).

Almost surely, 2^581163860070 is an apocalyptic number.

581163860070 is an abundant number, since it is smaller than the sum of its proper divisors (981674676090).

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

581163860070 is a wasteful number, since it uses less digits than its factorization.

581163860070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70491 (or 70482 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 581163860070 in words is "five hundred eighty-one billion, one hundred sixty-three million, eight hundred sixty thousand, seventy".