1372143421673 has 4 divisors (see below), whose sum is σ = 1373798601540. Its totient is φ = 1370488241808.

The previous prime is 1372143421661. The next prime is 1372143421787. The reversal of 1372143421673 is 3761243412731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 848078911744 + 524064509929 = 920912^2 + 723923^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372143421673 - 2²² = 1372139227369 is a prime.

It is a super-2 number, since 2×1372143421673² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1372143421073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827588690 + ... + 827590347.

It is an arithmetic number, because the mean of its divisors is an integer number (343449650385).

Almost surely, 2^{1372143421673} is an apocalyptic number.

It is an amenable number.

1372143421673 is a deficient number, since it is larger than the sum of its proper divisors (1655179867).

1372143421673 is an equidigital number, since it uses as much as digits as its factorization.

1372143421673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655179866.

The product of its digits is 508032, while the sum is 44.

The spelling of 1372143421673 in words is "one trillion, three hundred seventy-two billion, one hundred forty-three million, four hundred twenty-one thousand, six hundred seventy-three".