164160177640 has 16 divisors (see below), whose sum is σ = 369360399780. Its totient is φ = 65664071040.

The previous prime is 164160177583. The next prime is 164160177677. The reversal of 164160177640 is 46771061461.

It can be written as a sum of positive squares in 2 ways, for example, as 163146519396 + 1013658244 = 403914^2 + 31838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052002181 + ... + 2052002260.

Almost surely, 2^164160177640 is an apocalyptic number.

164160177640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164160177640 is an abundant number, since it is smaller than the sum of its proper divisors (205200222140).

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

164160177640 is a wasteful number, since it uses less digits than its factorization.

164160177640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104004452 (or 4104004448 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 164160177640 in words is "one hundred sixty-four billion, one hundred sixty million, one hundred seventy-seven thousand, six hundred forty".