66872939253 has 64 divisors (see below), whose sum is σ = 96886056960. Its totient is φ = 40876627968.

The previous prime is 66872939251. The next prime is 66872939281. The reversal of 66872939253 is 35293927866.

It is not a de Polignac number, because 66872939253 - 2¹ = 66872939251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66872939251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159601078 + ... + 159601496.

It is an arithmetic number, because the mean of its divisors is an integer number (1513844640).

Almost surely, 2^66872939253 is an apocalyptic number.

It is an amenable number.

66872939253 is a deficient number, since it is larger than the sum of its proper divisors (30013117707).

66872939253 is a wasteful number, since it uses less digits than its factorization.

66872939253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938.

The product of its digits is 29393280, while the sum is 60.

The spelling of 66872939253 in words is "sixty-six billion, eight hundred seventy-two million, nine hundred thirty-nine thousand, two hundred fifty-three".