15606166012 has 6 divisors (see below), whose sum is σ = 27310790528. Its totient is φ = 7803083004.

The previous prime is 15606165959. The next prime is 15606166067. The reversal of 15606166012 is 21066160651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1950770748 + ... + 1950770755.

Almost surely, 2^15606166012 is an apocalyptic number.

It is an amenable number.

15606166012 is a deficient number, since it is larger than the sum of its proper divisors (11704624516).

15606166012 is a wasteful number, since it uses less digits than its factorization.

15606166012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901541507 (or 3901541505 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 15606166012 in words is "fifteen billion, six hundred six million, one hundred sixty-six thousand, twelve".