164856402488 has 8 divisors (see below), whose sum is σ = 309105754680. Its totient is φ = 82428201240.

The previous prime is 164856402461. The next prime is 164856402493. The reversal of 164856402488 is 884204658461.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10303525148 + ... + 10303525163.

It is an arithmetic number, because the mean of its divisors is an integer number (38638219335).

Almost surely, 2^164856402488 is an apocalyptic number.

It is an amenable number.

164856402488 is a deficient number, since it is larger than the sum of its proper divisors (144249352192).

164856402488 is a wasteful number, since it uses less digits than its factorization.

164856402488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20607050317 (or 20607050313 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 56.

The spelling of 164856402488 in words is "one hundred sixty-four billion, eight hundred fifty-six million, four hundred two thousand, four hundred eighty-eight".