15985063201 has 2 divisors, whose sum is σ = 15985063202. Its totient is φ = 15985063200.

The previous prime is 15985063189. The next prime is 15985063217. The reversal of 15985063201 is 10236058951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14054339601 + 1930723600 = 118551^2 + 43940^2 .

It is a cyclic number.

It is not a de Polignac number, because 15985063201 - 2²¹ = 15982966049 is a prime.

It is not a weakly prime, because it can be changed into another prime (15985067201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7992531600 + 7992531601.

It is an arithmetic number, because the mean of its divisors is an integer number (7992531601).

Almost surely, 2^15985063201 is an apocalyptic number.

It is an amenable number.

15985063201 is a deficient number, since it is larger than the sum of its proper divisors (1).

15985063201 is an equidigital number, since it uses as much as digits as its factorization.

15985063201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 15985063201 in words is "fifteen billion, nine hundred eighty-five million, sixty-three thousand, two hundred one".