1395642666559 has 8 divisors (see below), whose sum is σ = 1398916233792. Its totient is φ = 1392372575520.

The previous prime is 1395642666547. The next prime is 1395642666563. The reversal of 1395642666559 is 9556662465931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1395642666559 - 2⁵ = 1395642666527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1395642666494 and 1395642666503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395642666359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64264 + ... + 1671949.

It is an arithmetic number, because the mean of its divisors is an integer number (174864529224).

Almost surely, 2^{1395642666559} is an apocalyptic number.

1395642666559 is a deficient number, since it is larger than the sum of its proper divisors (3273567233).

1395642666559 is a wasteful number, since it uses less digits than its factorization.

1395642666559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738097.

The product of its digits is 314928000, while the sum is 67.

The spelling of 1395642666559 in words is "one trillion, three hundred ninety-five billion, six hundred forty-two million, six hundred sixty-six thousand, five hundred fifty-nine".