66012040074 has 16 divisors (see below), whose sum is σ = 132910149600. Its totient is φ = 21856335120.

The previous prime is 66012040019. The next prime is 66012040097. The reversal of 66012040074 is 47004021066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36918592 + ... + 36920379.

It is an arithmetic number, because the mean of its divisors is an integer number (8306884350).

Almost surely, 2^66012040074 is an apocalyptic number.

66012040074 is an abundant number, since it is smaller than the sum of its proper divisors (66898109526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66012040074 is a wasteful number, since it uses less digits than its factorization.

66012040074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73839125.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 66012040074 in words is "sixty-six billion, twelve million, forty thousand, seventy-four".