1672037185205 has 4 divisors (see below), whose sum is σ = 2006444622252. Its totient is φ = 1337629748160.

The previous prime is 1672037185193. The next prime is 1672037185237. The reversal of 1672037185205 is 5025817302761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1082246976721 + 589790208484 = 1040311^2 + 767978^2 .

It is not a de Polignac number, because 1672037185205 - 2³² = 1667742217909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1672037185205.

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, 167203718516 + ... + 167203718525.

It is an arithmetic number, because the mean of its divisors is an integer number (501611155563).

Almost surely, 2^{1672037185205} is an apocalyptic number.

It is an amenable number.

1672037185205 is a deficient number, since it is larger than the sum of its proper divisors (334407437047).

1672037185205 is an equidigital number, since it uses as much as digits as its factorization.

1672037185205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334407437046.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 1672037185205 in words is "one trillion, six hundred seventy-two billion, thirty-seven million, one hundred eighty-five thousand, two hundred five".