1370626868257 has 2 divisors, whose sum is σ = 1370626868258. Its totient is φ = 1370626868256.

The previous prime is 1370626868209. The next prime is 1370626868263. The reversal of 1370626868257 is 7528686260731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 929698995681 + 440927872576 = 964209^2 + 664024^2 .

It is an emirp because it is prime and its reverse (7528686260731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1370626868257 - 2¹⁵ = 1370626835489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1370626868195 and 1370626868204.

It is not a weakly prime, because it can be changed into another prime (1370626868557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685313434128 + 685313434129.

It is an arithmetic number, because the mean of its divisors is an integer number (685313434129).

Almost surely, 2^{1370626868257} is an apocalyptic number.

It is an amenable number.

1370626868257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370626868257 is an equidigital number, since it uses as much as digits as its factorization.

1370626868257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 1370626868257 in words is "one trillion, three hundred seventy billion, six hundred twenty-six million, eight hundred sixty-eight thousand, two hundred fifty-seven".