1356791123357 has 4 divisors (see below), whose sum is σ = 1393461153756. Its totient is φ = 1320121092960.

The previous prime is 1356791123341. The next prime is 1356791123371. The reversal of 1356791123357 is 7533211976531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1203999258361 + 152791864996 = 1097269^2 + 390886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1356791123357 - 2⁴ = 1356791123341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1356791123299 and 1356791123308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356791173357) 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, 18335015144 + ... + 18335015217.

It is an arithmetic number, because the mean of its divisors is an integer number (348365288439).

Almost surely, 2^{1356791123357} is an apocalyptic number.

It is an amenable number.

1356791123357 is a deficient number, since it is larger than the sum of its proper divisors (36670030399).

1356791123357 is an equidigital number, since it uses as much as digits as its factorization.

1356791123357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36670030398.

The product of its digits is 3572100, while the sum is 53.

The spelling of 1356791123357 in words is "one trillion, three hundred fifty-six billion, seven hundred ninety-one million, one hundred twenty-three thousand, three hundred fifty-seven".