1351126350065 has 4 divisors (see below), whose sum is σ = 1621351620084. Its totient is φ = 1080901080048.

The previous prime is 1351126350019. The next prime is 1351126350181. The reversal of 1351126350065 is 5600536211531.

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 1013342209201 + 337784140864 = 1006649^2 + 581192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351126350065 - 2²⁰ = 1351125301489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135112635002 + ... + 135112635011.

It is an arithmetic number, because the mean of its divisors is an integer number (405337905021).

Almost surely, 2^{1351126350065} is an apocalyptic number.

It is an amenable number.

1351126350065 is a deficient number, since it is larger than the sum of its proper divisors (270225270019).

1351126350065 is an equidigital number, since it uses as much as digits as its factorization.

1351126350065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270225270018.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 1351126350065 in words is "one trillion, three hundred fifty-one billion, one hundred twenty-six million, three hundred fifty thousand, sixty-five".