15917447106 has 128 divisors (see below), whose sum is σ = 43008537600. Its totient is φ = 4300750080.

The previous prime is 15917447071. The next prime is 15917447111. The reversal of 15917447106 is 60174471951.

15917447106 is a `hidden beast` number, since 1 + 5 + 9 + 174 + 471 + 0 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 150381 + ... + 233343.

It is an arithmetic number, because the mean of its divisors is an integer number (336004200).

Almost surely, 2^15917447106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15917447106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21504268800).

15917447106 is an abundant number, since it is smaller than the sum of its proper divisors (27091090494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15917447106 is a wasteful number, since it uses less digits than its factorization.

15917447106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83021 (or 83015 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 15917447106 in words is "fifteen billion, nine hundred seventeen million, four hundred forty-seven thousand, one hundred six".