2051205515510 has 32 divisors (see below), whose sum is σ = 3714164928000. Its totient is φ = 815597808480.

The previous prime is 2051205515503. The next prime is 2051205515533. The reversal of 2051205515510 is 155155021502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4678691 + ... + 5098289.

It is an arithmetic number, because the mean of its divisors is an integer number (116067654000).

Almost surely, 2^{2051205515510} is an apocalyptic number.

2051205515510 is a deficient number, since it is larger than the sum of its proper divisors (1662959412490).

2051205515510 is a wasteful number, since it uses less digits than its factorization.

2051205515510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422516.

The product of its (nonzero) digits is 12500, while the sum is 32.

The spelling of 2051205515510 in words is "two trillion, fifty-one billion, two hundred five million, five hundred fifteen thousand, five hundred ten".