1372157646689 has 2 divisors, whose sum is σ = 1372157646690. Its totient is φ = 1372157646688.

The previous prime is 1372157646659. The next prime is 1372157646731. The reversal of 1372157646689 is 9866467512731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1166616010000 + 205541636689 = 1080100^2 + 453367^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372157646689 - 2¹⁶ = 1372157581153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372157646659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686078823344 + 686078823345.

It is an arithmetic number, because the mean of its divisors is an integer number (686078823345).

Almost surely, 2^{1372157646689} is an apocalyptic number.

It is an amenable number.

1372157646689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372157646689 is an equidigital number, since it uses as much as digits as its factorization.

1372157646689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 65.

The spelling of 1372157646689 in words is "one trillion, three hundred seventy-two billion, one hundred fifty-seven million, six hundred forty-six thousand, six hundred eighty-nine".