11562820166831 has 2 divisors, whose sum is σ = 11562820166832. Its totient is φ = 11562820166830.

The previous prime is 11562820166827. The next prime is 11562820166851. The reversal of 11562820166831 is 13866102826511.

11562820166831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11562820166831 - 2² = 11562820166827 is a prime.

It is a super-2 number, since 2×11562820166831² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11562820166831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11562820166851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5781410083415 + 5781410083416.

It is an arithmetic number, because the mean of its divisors is an integer number (5781410083416).

Almost surely, 2^{11562820166831} is an apocalyptic number.

11562820166831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11562820166831 is an equidigital number, since it uses as much as digits as its factorization.

11562820166831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 11562820166831 in words is "eleven trillion, five hundred sixty-two billion, eight hundred twenty million, one hundred sixty-six thousand, eight hundred thirty-one".