66872162442 has 16 divisors (see below), whose sum is σ = 136267803360. Its totient is φ = 21870141072.

The previous prime is 66872162419. The next prime is 66872162471. The reversal of 66872162442 is 24426127866.

It is a super-2 number, since 2×66872162442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66872162391 and 66872162400.

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, 105144592 + ... + 105145227.

It is an arithmetic number, because the mean of its divisors is an integer number (8516737710).

Almost surely, 2^66872162442 is an apocalyptic number.

66872162442 is an abundant number, since it is smaller than the sum of its proper divisors (69395640918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66872162442 is a wasteful number, since it uses less digits than its factorization.

66872162442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210289877.

The product of its digits is 1548288, while the sum is 48.

The spelling of 66872162442 in words is "sixty-six billion, eight hundred seventy-two million, one hundred sixty-two thousand, four hundred forty-two".