8213072136172 has 6 divisors (see below), whose sum is σ = 14372876238308. Its totient is φ = 4106536068084.

The previous prime is 8213072136167. The next prime is 8213072136173. The reversal of 8213072136172 is 2716312703128.

It is not an unprimeable number, because it can be changed into a prime (8213072136173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1026634017018 + ... + 1026634017025.

Almost surely, 2^{8213072136172} is an apocalyptic number.

It is an amenable number.

8213072136172 is a deficient number, since it is larger than the sum of its proper divisors (6159804102136).

8213072136172 is a wasteful number, since it uses less digits than its factorization.

8213072136172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053268034047 (or 2053268034045 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 8213072136172 in words is "eight trillion, two hundred thirteen billion, seventy-two million, one hundred thirty-six thousand, one hundred seventy-two".