1376652663889 has 4 divisors (see below), whose sum is σ = 1376678214756. Its totient is φ = 1376627113024.

The previous prime is 1376652663863. The next prime is 1376652663979. The reversal of 1376652663889 is 9883662566731.

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 811611801025 + 565040862864 = 900895^2 + 751692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376652663889 - 2¹⁹ = 1376652139601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1376652661889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12694444 + ... + 12802429.

It is an arithmetic number, because the mean of its divisors is an integer number (344169553689).

Almost surely, 2^{1376652663889} is an apocalyptic number.

It is an amenable number.

1376652663889 is a deficient number, since it is larger than the sum of its proper divisors (25550867).

1376652663889 is an equidigital number, since it uses as much as digits as its factorization.

1376652663889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25550866.

The product of its digits is 470292480, while the sum is 70.

The spelling of 1376652663889 in words is "one trillion, three hundred seventy-six billion, six hundred fifty-two million, six hundred sixty-three thousand, eight hundred eighty-nine".