662117277212172 has 36 divisors (see below), whose sum is σ = 1705264308296640. Its totient is φ = 216541499464992.

The previous prime is 662117277212141. The next prime is 662117277212173. The reversal of 662117277212172 is 271212772711266.

662117277212172 is a `hidden beast` number, since 6 + 6 + 21 + 172 + 77 + 212 + 172 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (662117277212173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173510814972 + ... + 173510818787.

It is an arithmetic number, because the mean of its divisors is an integer number (47368453008240).

Almost surely, 2^{662117277212172} is an apocalyptic number.

It is an amenable number.

662117277212172 is an abundant number, since it is smaller than the sum of its proper divisors (1043147031084468).

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

662117277212172 is a wasteful number, since it uses less digits than its factorization.

662117277212172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347021633822 (or 347021633817 counting only the distinct ones).

The product of its digits is 2765952, while the sum is 54.

The spelling of 662117277212172 in words is "six hundred sixty-two trillion, one hundred seventeen billion, two hundred seventy-seven million, two hundred twelve thousand, one hundred seventy-two".