170001666440 has 32 divisors (see below), whose sum is σ = 383264239680. Its totient is φ = 67865468352.

The previous prime is 170001666437. The next prime is 170001666479. The reversal of 170001666440 is 44666100071.

It is a self number, because there is not a number n which added to its sum of digits gives 170001666440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4204574 + ... + 4244813.

It is an arithmetic number, because the mean of its divisors is an integer number (11977007490).

Almost surely, 2^170001666440 is an apocalyptic number.

170001666440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170001666440 is an abundant number, since it is smaller than the sum of its proper divisors (213262573240).

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

170001666440 is a wasteful number, since it uses less digits than its factorization.

170001666440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8449901 (or 8449897 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 170001666440 in words is "one hundred seventy billion, one million, six hundred sixty-six thousand, four hundred forty".