1451029278409 has 2 divisors, whose sum is σ = 1451029278410. Its totient is φ = 1451029278408.

The previous prime is 1451029278401. The next prime is 1451029278443. The reversal of 1451029278409 is 9048729201541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018817703225 + 432211575184 = 1009365^2 + 657428^2 .

It is an emirp because it is prime and its reverse (9048729201541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1451029278409 - 2³ = 1451029278401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1451029278401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725514639204 + 725514639205.

It is an arithmetic number, because the mean of its divisors is an integer number (725514639205).

Almost surely, 2^{1451029278409} is an apocalyptic number.

It is an amenable number.

1451029278409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451029278409 is an equidigital number, since it uses as much as digits as its factorization.

1451029278409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 1451029278409 in words is "one trillion, four hundred fifty-one billion, twenty-nine million, two hundred seventy-eight thousand, four hundred nine".