66006406060004 has 6 divisors (see below), whose sum is σ = 115511210605014. Its totient is φ = 33003203030000.

The previous prime is 66006406059983. The next prime is 66006406060009. The reversal of 66006406060004 is 40006060460066.

It can be written as a sum of positive squares in only one way, i.e., 60954745251904 + 5051660808100 = 7807352^2 + 2247590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66006406060004.

It is not an unprimeable number, because it can be changed into a prime (66006406060009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8250800757497 + ... + 8250800757504.

It is an arithmetic number, because the mean of its divisors is an integer number (19251868434169).

Almost surely, 2^{66006406060004} is an apocalyptic number.

It is an amenable number.

66006406060004 is a deficient number, since it is larger than the sum of its proper divisors (49504804545010).

66006406060004 is a wasteful number, since it uses less digits than its factorization.

66006406060004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16501601515005 (or 16501601515003 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 66006406060004 in words is "sixty-six trillion, six billion, four hundred six million, sixty thousand, four".