66824528103987 has 8 divisors (see below), whose sum is σ = 89561025577104. Its totient is φ = 44318858016768.

The previous prime is 66824528103953. The next prime is 66824528103989. The reversal of 66824528103987 is 78930182542866.

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

It is not a de Polignac number, because 66824528103987 - 2⁸ = 66824528103731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66824528103989) 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, 57706845798 + ... + 57706846955.

It is an arithmetic number, because the mean of its divisors is an integer number (11195128197138).

It is a 1-persistent number, because it is pandigital, but 2⋅66824528103987 = 133649056207974 is not.

Almost surely, 2^{66824528103987} is an apocalyptic number.

66824528103987 is a deficient number, since it is larger than the sum of its proper divisors (22736497473117).

66824528103987 is a wasteful number, since it uses less digits than its factorization.

66824528103987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115413692949.

The product of its (nonzero) digits is 278691840, while the sum is 69.

The spelling of 66824528103987 in words is "sixty-six trillion, eight hundred twenty-four billion, five hundred twenty-eight million, one hundred three thousand, nine hundred eighty-seven".