1720146162667 has 4 divisors (see below), whose sum is σ = 1721006668000. Its totient is φ = 1719285657336.

The previous prime is 1720146162617. The next prime is 1720146162671. The reversal of 1720146162667 is 7662616410271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720146162667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1720146162667.

It is not an unprimeable number, because it can be changed into a prime (1720146162617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430249668 + ... + 430253665.

It is an arithmetic number, because the mean of its divisors is an integer number (430251667000).

Almost surely, 2^{1720146162667} is an apocalyptic number.

1720146162667 is a deficient number, since it is larger than the sum of its proper divisors (860505333).

1720146162667 is an equidigital number, since it uses as much as digits as its factorization.

1720146162667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860505332.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 1720146162667 in words is "one trillion, seven hundred twenty billion, one hundred forty-six million, one hundred sixty-two thousand, six hundred sixty-seven".