1395206578243 has 8 divisors (see below), whose sum is σ = 1402822665216. Its totient is φ = 1387602630600.

The previous prime is 1395206578229. The next prime is 1395206578261. The reversal of 1395206578243 is 3428756025931.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1395206578243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1395206578543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804293 + ... + 3264118.

It is an arithmetic number, because the mean of its divisors is an integer number (175352833152).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1395206578243 = 2790413156486, but 3⋅1395206578243 = 4185619734729 is not.

Almost surely, 2^{1395206578243} is an apocalyptic number.

1395206578243 is a deficient number, since it is larger than the sum of its proper divisors (7616086973).

1395206578243 is a wasteful number, since it uses less digits than its factorization.

1395206578243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069665.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 1395206578243 in words is "one trillion, three hundred ninety-five billion, two hundred six million, five hundred seventy-eight thousand, two hundred forty-three".