159666640004 has 6 divisors (see below), whose sum is σ = 279416620014. Its totient is φ = 79833320000.

The previous prime is 159666639997. The next prime is 159666640009. The reversal of 159666640004 is 400046666951.

It can be written as a sum of positive squares in only one way, i.e., 141678465604 + 17988174400 = 376402^2 + 134120^2 .

It is not an unprimeable number, because it can be changed into a prime (159666640009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19958329997 + ... + 19958330004.

It is an arithmetic number, because the mean of its divisors is an integer number (46569436669).

Almost surely, 2^159666640004 is an apocalyptic number.

It is an amenable number.

159666640004 is a deficient number, since it is larger than the sum of its proper divisors (119749980010).

159666640004 is a wasteful number, since it uses less digits than its factorization.

159666640004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39916660005 (or 39916660003 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 159666640004 in words is "one hundred fifty-nine billion, six hundred sixty-six million, six hundred forty thousand, four".