1355364050321 has 4 divisors (see below), whose sum is σ = 1356631931700. Its totient is φ = 1354096168944.

The previous prime is 1355364050311. The next prime is 1355364050329. The reversal of 1355364050321 is 1230504635531.

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 661326768400 + 694037281921 = 813220^2 + 833089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355364050321 - 2³⁸ = 1080486143377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355364050329) 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, 633939086 + ... + 633941223.

It is an arithmetic number, because the mean of its divisors is an integer number (339157982925).

Almost surely, 2^{1355364050321} is an apocalyptic number.

It is an amenable number.

1355364050321 is a deficient number, since it is larger than the sum of its proper divisors (1267881379).

1355364050321 is a wasteful number, since it uses less digits than its factorization.

1355364050321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267881378.

The product of its (nonzero) digits is 162000, while the sum is 38.

Adding to 1355364050321 its reverse (1230504635531), we get a palindrome (2585868685852).

The spelling of 1355364050321 in words is "one trillion, three hundred fifty-five billion, three hundred sixty-four million, fifty thousand, three hundred twenty-one".