15660465066 has 96 divisors (see below), whose sum is σ = 35295099840. Its totient is φ = 5014904832.

The previous prime is 15660465031. The next prime is 15660465077. The reversal of 15660465066 is 66056406651.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20364330 + ... + 20365098.

It is an arithmetic number, because the mean of its divisors is an integer number (367657290).

Almost surely, 2^15660465066 is an apocalyptic number.

15660465066 is an abundant number, since it is smaller than the sum of its proper divisors (19634634774).

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

15660465066 is a wasteful number, since it uses less digits than its factorization.

15660465066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 15660465066 in words is "fifteen billion, six hundred sixty million, four hundred sixty-five thousand, sixty-six".