66541273532 has 12 divisors (see below), whose sum is σ = 116641635600. Its totient is φ = 33215091936.

The previous prime is 66541273471. The next prime is 66541273609. The reversal of 66541273532 is 23537214566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13883513 + ... + 13888304.

It is an arithmetic number, because the mean of its divisors is an integer number (9720136300).

Almost surely, 2^66541273532 is an apocalyptic number.

It is an amenable number.

66541273532 is a deficient number, since it is larger than the sum of its proper divisors (50100362068).

66541273532 is a wasteful number, since it uses less digits than its factorization.

66541273532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27772420 (or 27772418 counting only the distinct ones).

The product of its digits is 907200, while the sum is 44.

The spelling of 66541273532 in words is "sixty-six billion, five hundred forty-one million, two hundred seventy-three thousand, five hundred thirty-two".