66443162045 has 24 divisors (see below), whose sum is σ = 88344675936. Its totient is φ = 47924630208.

The previous prime is 66443162041. The next prime is 66443162057. The reversal of 66443162045 is 54026134466.

It is not a de Polignac number, because 66443162045 - 2² = 66443162041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66443161993 and 66443162011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66443162041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 877979 + ... + 950648.

It is an arithmetic number, because the mean of its divisors is an integer number (3681028164).

Almost surely, 2^66443162045 is an apocalyptic number.

66443162045 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66443162045 is a deficient number, since it is larger than the sum of its proper divisors (21901513891).

66443162045 is a wasteful number, since it uses less digits than its factorization.

66443162045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828701 (or 1828688 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 41.

The spelling of 66443162045 in words is "sixty-six billion, four hundred forty-three million, one hundred sixty-two thousand, forty-five".