27381453532837 has 2 divisors, whose sum is σ = 27381453532838. Its totient is φ = 27381453532836.

The previous prime is 27381453532819. The next prime is 27381453532897. The reversal of 27381453532837 is 73823535418372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27337515503841 + 43938028996 = 5228529^2 + 209614^2 .

It is a cyclic number.

It is not a de Polignac number, because 27381453532837 - 2³¹ = 27379306049189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27381453532897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13690726766418 + 13690726766419.

It is an arithmetic number, because the mean of its divisors is an integer number (13690726766419).

Almost surely, 2^{27381453532837} is an apocalyptic number.

It is an amenable number.

27381453532837 is a deficient number, since it is larger than the sum of its proper divisors (1).

27381453532837 is an equidigital number, since it uses as much as digits as its factorization.

27381453532837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 101606400, while the sum is 61.

The spelling of 27381453532837 in words is "twenty-seven trillion, three hundred eighty-one billion, four hundred fifty-three million, five hundred thirty-two thousand, eight hundred thirty-seven".