15506611066 has 32 divisors (see below), whose sum is σ = 24618642048. Its totient is φ = 7316386560.

The previous prime is 15506611033. The next prime is 15506611069. The reversal of 15506611066 is 66011660551.

15506611066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (15506611069) 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, 341830 + ... + 384526.

It is an arithmetic number, because the mean of its divisors is an integer number (769332564).

Almost surely, 2^15506611066 is an apocalyptic number.

15506611066 is a deficient number, since it is larger than the sum of its proper divisors (9112030982).

15506611066 is a wasteful number, since it uses less digits than its factorization.

15506611066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42886.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 15506611066 in words is "fifteen billion, five hundred six million, six hundred eleven thousand, sixty-six".