66500556152 has 16 divisors (see below), whose sum is σ = 124692728400. Its totient is φ = 33249161920.

The previous prime is 66500556127. The next prime is 66500556163. The reversal of 66500556152 is 25165500566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148724 + ... + 393852.

It is an arithmetic number, because the mean of its divisors is an integer number (7793295525).

Almost surely, 2^66500556152 is an apocalyptic number.

It is an amenable number.

66500556152 is a deficient number, since it is larger than the sum of its proper divisors (58192172248).

66500556152 is a wasteful number, since it uses less digits than its factorization.

66500556152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279046 (or 279042 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 66500556152 in words is "sixty-six billion, five hundred million, five hundred fifty-six thousand, one hundred fifty-two".