164345556355636 has 18 divisors (see below), whose sum is σ = 294790564438790. Its totient is φ = 80168564072640.

The previous prime is 164345556355619. The next prime is 164345556355637. The reversal of 164345556355636 is 636553655543461.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 3022382250000 + 161323174105636 = 1738500^2 + 12701306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164345556355637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12220810971 + ... + 12220824418.

Almost surely, 2^{164345556355636} is an apocalyptic number.

It is an amenable number.

164345556355636 is a deficient number, since it is larger than the sum of its proper divisors (130445008083154).

164345556355636 is a wasteful number, since it uses less digits than its factorization.

164345556355636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24441635475 (or 24441635432 counting only the distinct ones).

The product of its digits is 1749600000, while the sum is 67.

The spelling of 164345556355636 in words is "one hundred sixty-four trillion, three hundred forty-five billion, five hundred fifty-six million, three hundred fifty-five thousand, six hundred thirty-six".