164921343156 has 36 divisors (see below), whose sum is σ = 425754393792. Its totient is φ = 53804125584.

The previous prime is 164921343127. The next prime is 164921343161. The reversal of 164921343156 is 651343129461.

164921343156 is a `hidden beast` number, since 1 + 6 + 492 + 1 + 3 + 4 + 3 + 156 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48733930 + ... + 48737313.

Almost surely, 2^164921343156 is an apocalyptic number.

It is an amenable number.

164921343156 is an abundant number, since it is smaller than the sum of its proper divisors (260833050636).

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

164921343156 is a wasteful number, since it uses less digits than its factorization.

164921343156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97471300 (or 97471295 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 164921343156 in words is "one hundred sixty-four billion, nine hundred twenty-one million, three hundred forty-three thousand, one hundred fifty-six".