66885523235 has 8 divisors (see below), whose sum is σ = 80794169376. Its totient is φ = 53154057600.

The previous prime is 66885523223. The next prime is 66885523249. The reversal of 66885523235 is 53232558866.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-66885523235 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44294294 + ... + 44295803.

It is an arithmetic number, because the mean of its divisors is an integer number (10099271172).

Almost surely, 2^66885523235 is an apocalyptic number.

66885523235 is a deficient number, since it is larger than the sum of its proper divisors (13908646141).

66885523235 is a wasteful number, since it uses less digits than its factorization.

66885523235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88590253.

The product of its digits is 10368000, while the sum is 53.

The spelling of 66885523235 in words is "sixty-six billion, eight hundred eighty-five million, five hundred twenty-three thousand, two hundred thirty-five".