2051704265640 has 32 divisors (see below), whose sum is σ = 6155112797280. Its totient is φ = 547121137472.

The previous prime is 2051704265629. The next prime is 2051704265659. The reversal of 2051704265640 is 465624071502.

It is a junction number, because it is equal to n+sod(n) for n = 2051704265592 and 2051704265601.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8548767654 + ... + 8548767893.

It is an arithmetic number, because the mean of its divisors is an integer number (192347274915).

Almost surely, 2^{2051704265640} is an apocalyptic number.

2051704265640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051704265640 is an abundant number, since it is smaller than the sum of its proper divisors (4103408531640).

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

2051704265640 is a wasteful number, since it uses less digits than its factorization.

2051704265640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17097535561 (or 17097535557 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 2051704265640 in words is "two trillion, fifty-one billion, seven hundred four million, two hundred sixty-five thousand, six hundred forty".