1534130312821 has 2 divisors, whose sum is σ = 1534130312822. Its totient is φ = 1534130312820.

The previous prime is 1534130312789. The next prime is 1534130312833. The reversal of 1534130312821 is 1282130314351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1038952104100 + 495178208721 = 1019290^2 + 703689^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534130312821 - 2⁵ = 1534130312789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534130312021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767065156410 + 767065156411.

It is an arithmetic number, because the mean of its divisors is an integer number (767065156411).

Almost surely, 2^{1534130312821} is an apocalyptic number.

It is an amenable number.

1534130312821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534130312821 is an equidigital number, since it uses as much as digits as its factorization.

1534130312821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 1534130312821 in words is "one trillion, five hundred thirty-four billion, one hundred thirty million, three hundred twelve thousand, eight hundred twenty-one".