1451432513561 has 2 divisors, whose sum is σ = 1451432513562. Its totient is φ = 1451432513560.

The previous prime is 1451432513549. The next prime is 1451432513569. The reversal of 1451432513561 is 1653152341541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398587699161 + 52844814400 = 1182619^2 + 229880^2 .

It is an emirp because it is prime and its reverse (1653152341541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1451432513561 - 2⁶ = 1451432513497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1451432513569) 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, 725716256780 + 725716256781.

It is an arithmetic number, because the mean of its divisors is an integer number (725716256781).

Almost surely, 2^{1451432513561} is an apocalyptic number.

It is an amenable number.

1451432513561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451432513561 is an equidigital number, since it uses as much as digits as its factorization.

1451432513561 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 1451432513561 in words is "one trillion, four hundred fifty-one billion, four hundred thirty-two million, five hundred thirteen thousand, five hundred sixty-one".