2981664056811 has 128 divisors (see below), whose sum is σ = 4732900761600. Its totient is φ = 1652248765440.

The previous prime is 2981664056809. The next prime is 2981664056851. The reversal of 2981664056811 is 1186504661892.

It is a happy number.

It is not a de Polignac number, because 2981664056811 - 2¹ = 2981664056809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2981664056851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 177228946 + ... + 177245768.

It is an arithmetic number, because the mean of its divisors is an integer number (36975787200).

Almost surely, 2^{2981664056811} is an apocalyptic number.

2981664056811 is a deficient number, since it is larger than the sum of its proper divisors (1751236704789).

2981664056811 is a wasteful number, since it uses less digits than its factorization.

2981664056811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17041.

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 2981664056811 in words is "two trillion, nine hundred eighty-one billion, six hundred sixty-four million, fifty-six thousand, eight hundred eleven".