66872162471 has 2 divisors, whose sum is σ = 66872162472. Its totient is φ = 66872162470.

The previous prime is 66872162419. The next prime is 66872162503. The reversal of 66872162471 is 17426127866.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66872162471 - 2¹⁴ = 66872146087 is a prime.

It is a super-3 number, since 3×66872162471³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66872162411) 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 as a sum of consecutive naturals, namely, 33436081235 + 33436081236.

It is an arithmetic number, because the mean of its divisors is an integer number (33436081236).

Almost surely, 2^66872162471 is an apocalyptic number.

66872162471 is a deficient number, since it is larger than the sum of its proper divisors (1).

66872162471 is an equidigital number, since it uses as much as digits as its factorization.

66872162471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 50.

The spelling of 66872162471 in words is "sixty-six billion, eight hundred seventy-two million, one hundred sixty-two thousand, four hundred seventy-one".