1534644321139 has 2 divisors, whose sum is σ = 1534644321140. Its totient is φ = 1534644321138.

The previous prime is 1534644321127. The next prime is 1534644321163. The reversal of 1534644321139 is 9311234464351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1534644321139 - 2²⁷ = 1534510103411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1534644321109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767322160569 + 767322160570.

It is an arithmetic number, because the mean of its divisors is an integer number (767322160570).

Almost surely, 2^{1534644321139} is an apocalyptic number.

1534644321139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534644321139 is an equidigital number, since it uses as much as digits as its factorization.

1534644321139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 46.

The spelling of 1534644321139 in words is "one trillion, five hundred thirty-four billion, six hundred forty-four million, three hundred twenty-one thousand, one hundred thirty-nine".