66503532471 has 8 divisors (see below), whose sum is σ = 91531743744. Its totient is φ = 42905504760.

The previous prime is 66503532467. The next prime is 66503532509. The reversal of 66503532471 is 17423530566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66503532471 - 2² = 66503532467 is a prime.

It is a super-3 number, since 3×66503532471³ (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 an unprimeable number, because it can be changed into a prime (66503532871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357545781 + ... + 357545966.

It is an arithmetic number, because the mean of its divisors is an integer number (11441467968).

Almost surely, 2^66503532471 is an apocalyptic number.

66503532471 is a deficient number, since it is larger than the sum of its proper divisors (25028211273).

66503532471 is a wasteful number, since it uses less digits than its factorization.

66503532471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715091781.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 66503532471 in words is "sixty-six billion, five hundred three million, five hundred thirty-two thousand, four hundred seventy-one".