1321413153553 has 16 divisors (see below), whose sum is σ = 1329980762880. Its totient is φ = 1312877462400.

The previous prime is 1321413153523. The next prime is 1321413153563. The reversal of 1321413153553 is 3553513141231.

It is a cyclic number.

It is not a de Polignac number, because 1321413153553 - 2¹³ = 1321413145361 is a prime.

It is a super-2 number, since 2×1321413153553² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321413153523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226305208 + ... + 226311046.

It is an arithmetic number, because the mean of its divisors is an integer number (83123797680).

Almost surely, 2^{1321413153553} is an apocalyptic number.

It is an amenable number.

1321413153553 is a deficient number, since it is larger than the sum of its proper divisors (8567609327).

1321413153553 is a wasteful number, since it uses less digits than its factorization.

1321413153553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8328.

The product of its digits is 81000, while the sum is 37.

Adding to 1321413153553 its reverse (3553513141231), we get a palindrome (4874926294784).

The spelling of 1321413153553 in words is "one trillion, three hundred twenty-one billion, four hundred thirteen million, one hundred fifty-three thousand, five hundred fifty-three".