209672112855 has 8 divisors (see below), whose sum is σ = 335475380592. Its totient is φ = 111825126848.

The previous prime is 209672112851. The next prime is 209672112901. The reversal of 209672112855 is 558211276902.

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

It is a cyclic number.

It is not a de Polignac number, because 209672112855 - 2² = 209672112851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209672112851) 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, 6989070414 + ... + 6989070443.

It is an arithmetic number, because the mean of its divisors is an integer number (41934422574).

Almost surely, 2^209672112855 is an apocalyptic number.

209672112855 is a deficient number, since it is larger than the sum of its proper divisors (125803267737).

209672112855 is a wasteful number, since it uses less digits than its factorization.

209672112855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13978140865.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 209672112855 in words is "two hundred nine billion, six hundred seventy-two million, one hundred twelve thousand, eight hundred fifty-five".