164546363866 has 4 divisors (see below), whose sum is σ = 246819545802. Its totient is φ = 82273181932.

The previous prime is 164546363843. The next prime is 164546363881. The reversal of 164546363866 is 668363645461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147363086641 + 17183277225 = 383879^2 + 131085^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164546363866.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41136590965 + ... + 41136590968.

Almost surely, 2^164546363866 is an apocalyptic number.

164546363866 is a deficient number, since it is larger than the sum of its proper divisors (82273181936).

164546363866 is an equidigital number, since it uses as much as digits as its factorization.

164546363866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82273181935.

The product of its digits is 44789760, while the sum is 58.

The spelling of 164546363866 in words is "one hundred sixty-four billion, five hundred forty-six million, three hundred sixty-three thousand, eight hundred sixty-six".