8131827531620 has 48 divisors (see below), whose sum is σ = 18404842761648. Its totient is φ = 3000169582080.

The previous prime is 8131827531559. The next prime is 8131827531701. The reversal of 8131827531620 is 261357281318.

It can be written as a sum of positive squares in 8 ways, for example, as 1081188199204 + 7050639332416 = 1039802^2 + 2655304^2 .

It is a super-2 number, since 2×8131827531620² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11913971 + ... + 12578010.

It is an arithmetic number, because the mean of its divisors is an integer number (383434224201).

Almost surely, 2^{8131827531620} is an apocalyptic number.

It is an amenable number.

8131827531620 is an abundant number, since it is smaller than the sum of its proper divisors (10273015230028).

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

8131827531620 is a wasteful number, since it uses less digits than its factorization.

8131827531620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24493280 (or 24493278 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 8131827531620 in words is "eight trillion, one hundred thirty-one billion, eight hundred twenty-seven million, five hundred thirty-one thousand, six hundred twenty".