1531457570081 has 2 divisors, whose sum is σ = 1531457570082. Its totient is φ = 1531457570080.

The previous prime is 1531457570029. The next prime is 1531457570161. The reversal of 1531457570081 is 1800757541351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1471165223056 + 60292347025 = 1212916^2 + 245545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1531457570081 - 2¹⁴ = 1531457553697 is a prime.

It is a super-2 number, since 2×1531457570081² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1531457570681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765728785040 + 765728785041.

It is an arithmetic number, because the mean of its divisors is an integer number (765728785041).

Almost surely, 2^{1531457570081} is an apocalyptic number.

It is an amenable number.

1531457570081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531457570081 is an equidigital number, since it uses as much as digits as its factorization.

1531457570081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588000, while the sum is 47.

The spelling of 1531457570081 in words is "one trillion, five hundred thirty-one billion, four hundred fifty-seven million, five hundred seventy thousand, eighty-one".