66903502069 has 16 divisors (see below), whose sum is σ = 70944019200. Its totient is φ = 62916606144.

The previous prime is 66903502021. The next prime is 66903502087. The reversal of 66903502069 is 96020530966.

It is a cyclic number.

It is not a de Polignac number, because 66903502069 - 2⁹ = 66903501557 is a prime.

It is a super-2 number, since 2×66903502069² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66903508069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1416259 + ... + 1462735.

It is an arithmetic number, because the mean of its divisors is an integer number (4434001200).

Almost surely, 2^66903502069 is an apocalyptic number.

It is an amenable number.

66903502069 is a deficient number, since it is larger than the sum of its proper divisors (4040517131).

66903502069 is a wasteful number, since it uses less digits than its factorization.

66903502069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47052.

The product of its (nonzero) digits is 524880, while the sum is 46.

It can be divided in two parts, 6 and 6903502069, that multiplied together give a palindrome (41421012414).

The spelling of 66903502069 in words is "sixty-six billion, nine hundred three million, five hundred two thousand, sixty-nine".