2131205671705 has 32 divisors (see below), whose sum is σ = 2881399910400. Its totient is φ = 1499208484800.

The previous prime is 2131205671669. The next prime is 2131205671747. The reversal of 2131205671705 is 5071765021312.

It is not a de Polignac number, because 2131205671705 - 2²⁷ = 2131071453977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3058386 + ... + 3690004.

It is an arithmetic number, because the mean of its divisors is an integer number (90043747200).

Almost surely, 2^{2131205671705} is an apocalyptic number.

It is an amenable number.

2131205671705 is a deficient number, since it is larger than the sum of its proper divisors (750194238695).

2131205671705 is a wasteful number, since it uses less digits than its factorization.

2131205671705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633645.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 2131205671705 in words is "two trillion, one hundred thirty-one billion, two hundred five million, six hundred seventy-one thousand, seven hundred five".