1720622371408 has 10 divisors (see below), whose sum is σ = 3333705844634. Its totient is φ = 860311185696.

The previous prime is 1720622371393. The next prime is 1720622371409. The reversal of 1720622371408 is 8041732260271.

It can be written as a sum of positive squares in only one way, i.e., 1718007889984 + 2614481424 = 1310728^2 + 51132^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720622371409) by changing a digit.

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 as a sum of consecutive naturals, namely, 53769449091 + ... + 53769449122.

Almost surely, 2^{1720622371408} is an apocalyptic number.

It is an amenable number.

1720622371408 is a deficient number, since it is larger than the sum of its proper divisors (1613083473226).

1720622371408 is a wasteful number, since it uses less digits than its factorization.

1720622371408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107538898221 (or 107538898215 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 1720622371408 in words is "one trillion, seven hundred twenty billion, six hundred twenty-two million, three hundred seventy-one thousand, four hundred eight".