2051605207056 has 40 divisors (see below), whose sum is σ = 5578926442720. Its totient is φ = 647875328256.

The previous prime is 2051605207033. The next prime is 2051605207079. The reversal of 2051605207056 is 6507025061502.

It is an interprime number because it is at equal distance from previous prime (2051605207033) and next prime (2051605207079).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124782645 + ... + 1124784468.

It is an arithmetic number, because the mean of its divisors is an integer number (139473161068).

Almost surely, 2^{2051605207056} is an apocalyptic number.

It is an amenable number.

2051605207056 is an abundant number, since it is smaller than the sum of its proper divisors (3527321235664).

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

2051605207056 is a wasteful number, since it uses less digits than its factorization.

2051605207056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249567143 (or 2249567137 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 2051605207056 in words is "two trillion, fifty-one billion, six hundred five million, two hundred seven thousand, fifty-six".