16436587901 has 2 divisors, whose sum is σ = 16436587902. Its totient is φ = 16436587900.

The previous prime is 16436587891. The next prime is 16436587927. The reversal of 16436587901 is 10978563461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8510247001 + 7926340900 = 92251^2 + 89030^2 .

It is a cyclic number.

It is not a de Polignac number, because 16436587901 - 2⁶ = 16436587837 is a prime.

It is a super-2 number, since 2×16436587901² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16436587901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16436587961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8218293950 + 8218293951.

It is an arithmetic number, because the mean of its divisors is an integer number (8218293951).

Almost surely, 2^16436587901 is an apocalyptic number.

It is an amenable number.

16436587901 is a deficient number, since it is larger than the sum of its proper divisors (1).

16436587901 is an equidigital number, since it uses as much as digits as its factorization.

16436587901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 16436587901 in words is "sixteen billion, four hundred thirty-six million, five hundred eighty-seven thousand, nine hundred one".