1390302608857 has 2 divisors, whose sum is σ = 1390302608858. Its totient is φ = 1390302608856.

The previous prime is 1390302608833. The next prime is 1390302608887. The reversal of 1390302608857 is 7588062030931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1000582084681 + 389720524176 = 1000291^2 + 624276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1390302608857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1390302608887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695151304428 + 695151304429.

It is an arithmetic number, because the mean of its divisors is an integer number (695151304429).

Almost surely, 2^{1390302608857} is an apocalyptic number.

It is an amenable number.

1390302608857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390302608857 is an equidigital number, since it uses as much as digits as its factorization.

1390302608857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 1390302608857 in words is "one trillion, three hundred ninety billion, three hundred two million, six hundred eight thousand, eight hundred fifty-seven".