15506166064 has 20 divisors (see below), whose sum is σ = 30047389840. Its totient is φ = 7752000960.

The previous prime is 15506166061. The next prime is 15506166083. The reversal of 15506166064 is 46066160551.

It is not an unprimeable number, because it can be changed into a prime (15506166061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57622 + ... + 185290.

It is an arithmetic number, because the mean of its divisors is an integer number (1502369492).

Almost surely, 2^15506166064 is an apocalyptic number.

It is an amenable number.

15506166064 is a deficient number, since it is larger than the sum of its proper divisors (14541223776).

15506166064 is a wasteful number, since it uses less digits than its factorization.

15506166064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135268 (or 135262 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 15506166064 in words is "fifteen billion, five hundred six million, one hundred sixty-six thousand, sixty-four".