2172205505046 has 8 divisors (see below), whose sum is σ = 4344411010104. Its totient is φ = 724068501680.

The previous prime is 2172205505039. The next prime is 2172205505111. The reversal of 2172205505046 is 6405055022712.

It is a sphenic number, since it is the product of 3 distinct primes.

2172205505046 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2172205504995 and 2172205505013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181017125415 + ... + 181017125426.

It is an arithmetic number, because the mean of its divisors is an integer number (543051376263).

Almost surely, 2^{2172205505046} is an apocalyptic number.

2172205505046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2172205505046 is a wasteful number, since it uses less digits than its factorization.

2172205505046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362034250846.

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 2172205505046 in words is "two trillion, one hundred seventy-two billion, two hundred five million, five hundred five thousand, forty-six".