66015525256 has 16 divisors (see below), whose sum is σ = 123958250640. Its totient is φ = 32959991760.

The previous prime is 66015525229. The next prime is 66015525269. The reversal of 66015525256 is 65252551066.

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, 5965486 + ... + 5976541.

It is an arithmetic number, because the mean of its divisors is an integer number (7747390665).

Almost surely, 2^66015525256 is an apocalyptic number.

It is an amenable number.

66015525256 is a deficient number, since it is larger than the sum of its proper divisors (57942725384).

66015525256 is a wasteful number, since it uses less digits than its factorization.

66015525256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942724 (or 11942720 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 66015525256 in words is "sixty-six billion, fifteen million, five hundred twenty-five thousand, two hundred fifty-six".