1372888661873 has 2 divisors, whose sum is σ = 1372888661874. Its totient is φ = 1372888661872.

The previous prime is 1372888661861. The next prime is 1372888661891. The reversal of 1372888661873 is 3781668882731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1168251854449 + 204636807424 = 1080857^2 + 452368^2 .

It is an emirp because it is prime and its reverse (3781668882731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372888661873 - 2⁴⁰ = 273377034097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372888661813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686444330936 + 686444330937.

It is an arithmetic number, because the mean of its divisors is an integer number (686444330937).

Almost surely, 2^{1372888661873} is an apocalyptic number.

It is an amenable number.

1372888661873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372888661873 is an equidigital number, since it uses as much as digits as its factorization.

1372888661873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 130056192, while the sum is 68.

The spelling of 1372888661873 in words is "one trillion, three hundred seventy-two billion, eight hundred eighty-eight million, six hundred sixty-one thousand, eight hundred seventy-three".