672161775211 has 4 divisors (see below), whose sum is σ = 672163522024. Its totient is φ = 672160028400.

The previous prime is 672161775209. The next prime is 672161775217. The reversal of 672161775211 is 112577161276.

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

It is a cyclic number.

It is not a de Polignac number, because 672161775211 - 2¹ = 672161775209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672161775217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14985 + ... + 1159546.

It is an arithmetic number, because the mean of its divisors is an integer number (168040880506).

Almost surely, 2^672161775211 is an apocalyptic number.

672161775211 is a deficient number, since it is larger than the sum of its proper divisors (1746813).

672161775211 is a wasteful number, since it uses less digits than its factorization.

672161775211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746812.

The product of its digits is 246960, while the sum is 46.

The spelling of 672161775211 in words is "six hundred seventy-two billion, one hundred sixty-one million, seven hundred seventy-five thousand, two hundred eleven".