1720622645040 has 160 divisors (see below), whose sum is σ = 5744758311936. Its totient is φ = 423499115520.

The previous prime is 1720622645017. The next prime is 1720622645069. The reversal of 1720622645040 is 405462260271.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1720622645040.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49874677 + ... + 49909163.

Almost surely, 2^{1720622645040} is an apocalyptic number.

1720622645040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1720622645040 is an abundant number, since it is smaller than the sum of its proper divisors (4024135666896).

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

1720622645040 is a wasteful number, since it uses less digits than its factorization.

1720622645040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50507 (or 50501 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 1720622645040 in words is "one trillion, seven hundred twenty billion, six hundred twenty-two million, six hundred forty-five thousand, forty".