201436515493 has 2 divisors, whose sum is σ = 201436515494. Its totient is φ = 201436515492.

The previous prime is 201436515437. The next prime is 201436515563. The reversal of 201436515493 is 394515634102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178393882689 + 23042632804 = 422367^2 + 151798^2 .

It is a cyclic number.

It is not a de Polignac number, because 201436515493 - 2¹⁷ = 201436384421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201436515403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100718257746 + 100718257747.

It is an arithmetic number, because the mean of its divisors is an integer number (100718257747).

Almost surely, 2^201436515493 is an apocalyptic number.

It is an amenable number.

201436515493 is a deficient number, since it is larger than the sum of its proper divisors (1).

201436515493 is an equidigital number, since it uses as much as digits as its factorization.

201436515493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 201436515493 in words is "two hundred one billion, four hundred thirty-six million, five hundred fifteen thousand, four hundred ninety-three".