7138402405493 has 2 divisors, whose sum is σ = 7138402405494. Its totient is φ = 7138402405492.

The previous prime is 7138402405369. The next prime is 7138402405513. The reversal of 7138402405493 is 3945042048317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6909863910244 + 228538495249 = 2628662^2 + 478057^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138402405493 - 2²⁰ = 7138401356917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138402405993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569201202746 + 3569201202747.

It is an arithmetic number, because the mean of its divisors is an integer number (3569201202747).

Almost surely, 2^{7138402405493} is an apocalyptic number.

It is an amenable number.

7138402405493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138402405493 is an equidigital number, since it uses as much as digits as its factorization.

7138402405493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 7138402405493 in words is "seven trillion, one hundred thirty-eight billion, four hundred two million, four hundred five thousand, four hundred ninety-three".