66673400074 has 16 divisors (see below), whose sum is σ = 101125392840. Its totient is φ = 32965753600.

The previous prime is 66673400051. The next prime is 66673400077. The reversal of 66673400074 is 47000437666.

It can be written as a sum of positive squares in 4 ways, for example, as 66302645049 + 370755025 = 257493^2 + 19255^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66673400074.

It is not an unprimeable number, because it can be changed into a prime (66673400077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40579 + ... + 367414.

Almost surely, 2^66673400074 is an apocalyptic number.

66673400074 is a deficient number, since it is larger than the sum of its proper divisors (34451992766).

66673400074 is a wasteful number, since it uses less digits than its factorization.

66673400074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408905.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 66673400074 in words is "sixty-six billion, six hundred seventy-three million, four hundred thousand, seventy-four".