15638934897 has 16 divisors (see below), whose sum is σ = 23335480000. Its totient is φ = 10350947232.

The previous prime is 15638934889. The next prime is 15638934911. The reversal of 15638934897 is 79843983651.

15638934897 is a `hidden beast` number, since 1 + 5 + 63 + 8 + 93 + 489 + 7 = 666.

15638934897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15638934897 - 2³ = 15638934889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15638934877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2079772 + ... + 2087277.

It is an arithmetic number, because the mean of its divisors is an integer number (1458467500).

Almost surely, 2^15638934897 is an apocalyptic number.

It is an amenable number.

15638934897 is a deficient number, since it is larger than the sum of its proper divisors (7696545103).

15638934897 is a wasteful number, since it uses less digits than its factorization.

15638934897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167197 (or 4167191 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 15638934897 in words is "fifteen billion, six hundred thirty-eight million, nine hundred thirty-four thousand, eight hundred ninety-seven".