164285731672 has 8 divisors (see below), whose sum is σ = 308035746900. Its totient is φ = 82142865832.

The previous prime is 164285731637. The next prime is 164285731679. The reversal of 164285731672 is 276137582461.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164285731679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10267858222 + ... + 10267858237.

Almost surely, 2^164285731672 is an apocalyptic number.

It is an amenable number.

164285731672 is a deficient number, since it is larger than the sum of its proper divisors (143750015228).

164285731672 is a wasteful number, since it uses less digits than its factorization.

164285731672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20535716465 (or 20535716461 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 164285731672 in words is "one hundred sixty-four billion, two hundred eighty-five million, seven hundred thirty-one thousand, six hundred seventy-two".