16140466405493 has 2 divisors, whose sum is σ = 16140466405494. Its totient is φ = 16140466405492.

The previous prime is 16140466405369. The next prime is 16140466405517. The reversal of 16140466405493 is 39450466404161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14116499239249 + 2023967166244 = 3757193^2 + 1422662^2 .

It is a cyclic number.

It is not a de Polignac number, because 16140466405493 - 2³² = 16136171438197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16140460405493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8070233202746 + 8070233202747.

It is an arithmetic number, because the mean of its divisors is an integer number (8070233202747).

Almost surely, 2^{16140466405493} is an apocalyptic number.

It is an amenable number.

16140466405493 is a deficient number, since it is larger than the sum of its proper divisors (1).

16140466405493 is an equidigital number, since it uses as much as digits as its factorization.

16140466405493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 16140466405493 in words is "sixteen trillion, one hundred forty billion, four hundred sixty-six million, four hundred five thousand, four hundred ninety-three".