1351045266521 has 16 divisors (see below), whose sum is σ = 1396864161600. Its totient is φ = 1305725220288.

The previous prime is 1351045266451. The next prime is 1351045266551. The reversal of 1351045266521 is 1256625401531.

It is a cyclic number.

It is not a de Polignac number, because 1351045266521 - 2²⁶ = 1350978157657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1351045266551) 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, 10726850 + ... + 10852068.

It is an arithmetic number, because the mean of its divisors is an integer number (87304010100).

Almost surely, 2^{1351045266521} is an apocalyptic number.

It is an amenable number.

1351045266521 is a deficient number, since it is larger than the sum of its proper divisors (45818895079).

1351045266521 is a wasteful number, since it uses less digits than its factorization.

1351045266521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127208.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1351045266521 in words is "one trillion, three hundred fifty-one billion, forty-five million, two hundred sixty-six thousand, five hundred twenty-one".