1720664663162 has 8 divisors (see below), whose sum is σ = 2693214255456. Its totient is φ = 822926578012.

The previous prime is 1720664663153. The next prime is 1720664663171. The reversal of 1720664663162 is 2613664660271.

It is an interprime number because it is at equal distance from previous prime (1720664663153) and next prime (1720664663171).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1720664663162.

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, 18702876728 + ... + 18702876819.

It is an arithmetic number, because the mean of its divisors is an integer number (336651781932).

Almost surely, 2^{1720664663162} is an apocalyptic number.

1720664663162 is a deficient number, since it is larger than the sum of its proper divisors (972549592294).

1720664663162 is a wasteful number, since it uses less digits than its factorization.

1720664663162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37405753572.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 1720664663162 in words is "one trillion, seven hundred twenty billion, six hundred sixty-four million, six hundred sixty-three thousand, one hundred sixty-two".