1672216801611 has 8 divisors (see below), whose sum is σ = 2229652536384. Its totient is φ = 1114796133960.

The previous prime is 1672216801547. The next prime is 1672216801627. The reversal of 1672216801611 is 1161086122761.

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

It is not a de Polignac number, because 1672216801611 - 2⁶ = 1672216801547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1672216801711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505221 + ... + 3953606.

It is an arithmetic number, because the mean of its divisors is an integer number (278706567048).

Almost surely, 2^{1672216801611} is an apocalyptic number.

1672216801611 is a deficient number, since it is larger than the sum of its proper divisors (557435734773).

1672216801611 is an equidigital number, since it uses as much as digits as its factorization.

1672216801611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533561.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 1672216801611 in words is "one trillion, six hundred seventy-two billion, two hundred sixteen million, eight hundred one thousand, six hundred eleven".