2005342631646 has 32 divisors (see below), whose sum is σ = 4221920509440. Its totient is φ = 633244112064.

The previous prime is 2005342631623. The next prime is 2005342631683. The reversal of 2005342631646 is 6461362435002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2005342631598 and 2005342631607.

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, 3165531 + ... + 3745833.

It is an arithmetic number, because the mean of its divisors is an integer number (131935015920).

Almost surely, 2^{2005342631646} is an apocalyptic number.

2005342631646 is an abundant number, since it is smaller than the sum of its proper divisors (2216577877794).

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

2005342631646 is a wasteful number, since it uses less digits than its factorization.

2005342631646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610640.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 2005342631646 in words is "two trillion, five billion, three hundred forty-two million, six hundred thirty-one thousand, six hundred forty-six".