66010765655 has 32 divisors (see below), whose sum is σ = 86070600000. Its totient is φ = 48406321152.

The previous prime is 66010765643. The next prime is 66010765679. The reversal of 66010765655 is 55656701066.

It is not a de Polignac number, because 66010765655 - 2¹² = 66010761559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1249721 + ... + 1301469.

It is an arithmetic number, because the mean of its divisors is an integer number (2689706250).

Almost surely, 2^66010765655 is an apocalyptic number.

66010765655 is a deficient number, since it is larger than the sum of its proper divisors (20059834345).

66010765655 is a wasteful number, since it uses less digits than its factorization.

66010765655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52163.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 66010765655 in words is "sixty-six billion, ten million, seven hundred sixty-five thousand, six hundred fifty-five".