15658611066 has 160 divisors (see below), whose sum is σ = 41536585728. Its totient is φ = 4314552480.

The previous prime is 15658611043. The next prime is 15658611077. The reversal of 15658611066 is 66011685651.

15658611066 is a `hidden beast` number, since 1 + 5 + 6 + 586 + 1 + 1 + 0 + 66 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13463401 + ... + 13464563.

Almost surely, 2^15658611066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15658611066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20768292864).

15658611066 is an abundant number, since it is smaller than the sum of its proper divisors (25877974662).

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

15658611066 is a wasteful number, since it uses less digits than its factorization.

15658611066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 15658611066 in words is "fifteen billion, six hundred fifty-eight million, six hundred eleven thousand, sixty-six".