1356791244557 has 16 divisors (see below), whose sum is σ = 1638733017600. Its totient is φ = 1097365806000.

The previous prime is 1356791244553. The next prime is 1356791244581. The reversal of 1356791244557 is 7554421976531.

It is a cyclic number.

It is not a de Polignac number, because 1356791244557 - 2² = 1356791244553 is a prime.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1356791244496 and 1356791244505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356791244553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20288207 + ... + 20354972.

It is an arithmetic number, because the mean of its divisors is an integer number (102420813600).

Almost surely, 2^{1356791244557} is an apocalyptic number.

It is an amenable number.

1356791244557 is a deficient number, since it is larger than the sum of its proper divisors (281941773043).

1356791244557 is a wasteful number, since it uses less digits than its factorization.

1356791244557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40643456.

The product of its digits is 31752000, while the sum is 59.

The spelling of 1356791244557 in words is "one trillion, three hundred fifty-six billion, seven hundred ninety-one million, two hundred forty-four thousand, five hundred fifty-seven".