1351336612621 has 2 divisors, whose sum is σ = 1351336612622. Its totient is φ = 1351336612620.

The previous prime is 1351336612601. The next prime is 1351336612729. The reversal of 1351336612621 is 1262166331531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 991390610596 + 359946002025 = 995686^2 + 599955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351336612621 - 2⁵ = 1351336612589 is a prime.

It is a super-2 number, since 2×1351336612621² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351336612601) 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 as a sum of consecutive naturals, namely, 675668306310 + 675668306311.

It is an arithmetic number, because the mean of its divisors is an integer number (675668306311).

Almost surely, 2^{1351336612621} is an apocalyptic number.

It is an amenable number.

1351336612621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351336612621 is an equidigital number, since it uses as much as digits as its factorization.

1351336612621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The spelling of 1351336612621 in words is "one trillion, three hundred fifty-one billion, three hundred thirty-six million, six hundred twelve thousand, six hundred twenty-one".