66771041104004 has 6 divisors (see below), whose sum is σ = 116849321932014. Its totient is φ = 33385520552000.

The previous prime is 66771041103983. The next prime is 66771041104057. The reversal of 66771041104004 is 40040114017766.

It can be written as a sum of positive squares in only one way, i.e., 55751310222400 + 11019730881604 = 7466680^2 + 3319598^2 .

It is a super-2 number, since 2×66771041104004² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8346380137997 + ... + 8346380138004.

It is an arithmetic number, because the mean of its divisors is an integer number (19474886988669).

Almost surely, 2^{66771041104004} is an apocalyptic number.

It is an amenable number.

66771041104004 is a deficient number, since it is larger than the sum of its proper divisors (50078280828010).

66771041104004 is a wasteful number, since it uses less digits than its factorization.

66771041104004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16692760276005 (or 16692760276003 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 66771041104004 in words is "sixty-six trillion, seven hundred seventy-one billion, forty-one million, one hundred four thousand, four".