2061210877816 has 8 divisors (see below), whose sum is σ = 3864770395920. Its totient is φ = 1030605438904.

The previous prime is 2061210877813. The next prime is 2061210877823. The reversal of 2061210877816 is 6187780121602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2061210877816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061210877813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128825679856 + ... + 128825679871.

It is an arithmetic number, because the mean of its divisors is an integer number (483096299490).

Almost surely, 2^{2061210877816} is an apocalyptic number.

It is an amenable number.

2061210877816 is a deficient number, since it is larger than the sum of its proper divisors (1803559518104).

2061210877816 is a wasteful number, since it uses less digits than its factorization.

2061210877816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257651359733 (or 257651359729 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 2061210877816 in words is "two trillion, sixty-one billion, two hundred ten million, eight hundred seventy-seven thousand, eight hundred sixteen".