1340663852357 has 4 divisors (see below), whose sum is σ = 1340666379360. Its totient is φ = 1340661325356.

The previous prime is 1340663852293. The next prime is 1340663852371. The reversal of 1340663852357 is 7532583660431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1340663852357 - 2⁶ = 1340663852293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340663852299 and 1340663852308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340663852057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126857 + ... + 1642382.

It is an arithmetic number, because the mean of its divisors is an integer number (335166594840).

Almost surely, 2^{1340663852357} is an apocalyptic number.

It is an amenable number.

1340663852357 is a deficient number, since it is larger than the sum of its proper divisors (2527003).

1340663852357 is an equidigital number, since it uses as much as digits as its factorization.

1340663852357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527002.

The product of its (nonzero) digits is 10886400, while the sum is 53.

The spelling of 1340663852357 in words is "one trillion, three hundred forty billion, six hundred sixty-three million, eight hundred fifty-two thousand, three hundred fifty-seven".