2811384180681 has 16 divisors (see below), whose sum is σ = 3756656386560. Its totient is φ = 1870184712960.

The previous prime is 2811384180667. The next prime is 2811384180691. The reversal of 2811384180681 is 1860814831182.

It is not a de Polignac number, because 2811384180681 - 2¹³ = 2811384172489 is a prime.

It is a super-2 number, since 2×2811384180681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2811384180691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18289761 + ... + 18442833.

It is an arithmetic number, because the mean of its divisors is an integer number (234791024160).

Almost surely, 2^{2811384180681} is an apocalyptic number.

It is an amenable number.

2811384180681 is a deficient number, since it is larger than the sum of its proper divisors (945272205879).

2811384180681 is a wasteful number, since it uses less digits than its factorization.

2811384180681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166336.

The product of its (nonzero) digits is 589824, while the sum is 51.

The spelling of 2811384180681 in words is "two trillion, eight hundred eleven billion, three hundred eighty-four million, one hundred eighty thousand, six hundred eighty-one".