1351757121145 has 4 divisors (see below), whose sum is σ = 1622108545380. Its totient is φ = 1081405696912.

The previous prime is 1351757121119. The next prime is 1351757121157. The reversal of 1351757121145 is 5411217571531.

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 649734335721 + 702022785424 = 806061^2 + 837868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351757121145 - 2⁷ = 1351757121017 is a prime.

It is a super-2 number, since 2×1351757121145² (a number of 25 digits) contains 22 as substring.

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, 135175712110 + ... + 135175712119.

It is an arithmetic number, because the mean of its divisors is an integer number (405527136345).

Almost surely, 2^{1351757121145} is an apocalyptic number.

It is an amenable number.

1351757121145 is a deficient number, since it is larger than the sum of its proper divisors (270351424235).

1351757121145 is an equidigital number, since it uses as much as digits as its factorization.

1351757121145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270351424234.

The product of its digits is 147000, while the sum is 43.

The spelling of 1351757121145 in words is "one trillion, three hundred fifty-one billion, seven hundred fifty-seven million, one hundred twenty-one thousand, one hundred forty-five".