66050000656 has 40 divisors (see below), whose sum is σ = 136915592000. Its totient is φ = 30773934720.

The previous prime is 66050000633. The next prime is 66050000659. The reversal of 66050000656 is 65600005066.

It is not an unprimeable number, because it can be changed into a prime (66050000659) 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, 1762356 + ... + 1799443.

It is an arithmetic number, because the mean of its divisors is an integer number (3422889800).

Almost surely, 2^66050000656 is an apocalyptic number.

It is an amenable number.

66050000656 is an abundant number, since it is smaller than the sum of its proper divisors (70865591344).

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

66050000656 is a wasteful number, since it uses less digits than its factorization.

66050000656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561887 (or 3561881 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 66050000656 in words is "sixty-six billion, fifty million, six hundred fifty-six", and thus it is an aban number.