1720622720044 has 24 divisors (see below), whose sum is σ = 3026417181200. Its totient is φ = 855943200000.

The previous prime is 1720622719997. The next prime is 1720622720053. The reversal of 1720622720044 is 4400272260271.

It is a super-2 number, since 2×1720622720044² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1720622719985 and 1720622720012.

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, 767457 + ... + 2007544.

Almost surely, 2^{1720622720044} is an apocalyptic number.

It is an amenable number.

1720622720044 is a deficient number, since it is larger than the sum of its proper divisors (1305794461156).

1720622720044 is a wasteful number, since it uses less digits than its factorization.

1720622720044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775793 (or 2775791 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 1720622720044 in words is "one trillion, seven hundred twenty billion, six hundred twenty-two million, seven hundred twenty thousand, forty-four".