1338078922361 has 2 divisors, whose sum is σ = 1338078922362. Its totient is φ = 1338078922360.

The previous prime is 1338078922319. The next prime is 1338078922421. The reversal of 1338078922361 is 1632298708331.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1337122195600 + 956726761 = 1156340^2 + 30931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338078922361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338078912361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669039461180 + 669039461181.

It is an arithmetic number, because the mean of its divisors is an integer number (669039461181).

Almost surely, 2^{1338078922361} is an apocalyptic number.

It is an amenable number.

1338078922361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338078922361 is an equidigital number, since it uses as much as digits as its factorization.

1338078922361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 1338078922361 in words is "one trillion, three hundred thirty-eight billion, seventy-eight million, nine hundred twenty-two thousand, three hundred sixty-one".