66056016605 has 16 divisors (see below), whose sum is σ = 80044529664. Its totient is φ = 52328203200.

The previous prime is 66056016589. The next prime is 66056016617. The reversal of 66056016605 is 50661065066.

It is not a de Polignac number, because 66056016605 - 2⁴ = 66056016589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232655 + ... + 431555.

It is an arithmetic number, because the mean of its divisors is an integer number (5002783104).

Almost surely, 2^66056016605 is an apocalyptic number.

It is an amenable number.

66056016605 is a deficient number, since it is larger than the sum of its proper divisors (13988513059).

66056016605 is a wasteful number, since it uses less digits than its factorization.

66056016605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199556.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 66056016605 in words is "sixty-six billion, fifty-six million, sixteen thousand, six hundred five".