1553355331513 has 2 divisors, whose sum is σ = 1553355331514. Its totient is φ = 1553355331512.

The previous prime is 1553355331481. The next prime is 1553355331537. The reversal of 1553355331513 is 3151335533551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 939682074384 + 613673257129 = 969372^2 + 783373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1553355331513 - 2⁵ = 1553355331481 is a prime.

It is a super-3 number, since 3×1553355331513³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1553355331513.

It is not a weakly prime, because it can be changed into another prime (1553355331543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776677665756 + 776677665757.

It is an arithmetic number, because the mean of its divisors is an integer number (776677665757).

Almost surely, 2^{1553355331513} is an apocalyptic number.

It is an amenable number.

1553355331513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1553355331513 is an equidigital number, since it uses as much as digits as its factorization.

1553355331513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 759375, while the sum is 43.

The spelling of 1553355331513 in words is "one trillion, five hundred fifty-three billion, three hundred fifty-five million, three hundred thirty-one thousand, five hundred thirteen".