1353564340261 has 8 divisors (see below), whose sum is σ = 1573149839040. Its totient is φ = 1140533632608.

The previous prime is 1353564340211. The next prime is 1353564340307. The reversal of 1353564340261 is 1620434653531.

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 1353564340261 - 2²⁵ = 1353530785829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353564340211) 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, 1638697336 + ... + 1638698161.

It is an arithmetic number, because the mean of its divisors is an integer number (196643729880).

Almost surely, 2^{1353564340261} is an apocalyptic number.

It is an amenable number.

1353564340261 is a deficient number, since it is larger than the sum of its proper divisors (219585498779).

1353564340261 is an equidigital number, since it uses as much as digits as its factorization.

1353564340261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277395563.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 1353564340261 its reverse (1620434653531), we get a palindrome (2973998993792).

The spelling of 1353564340261 in words is "one trillion, three hundred fifty-three billion, five hundred sixty-four million, three hundred forty thousand, two hundred sixty-one".