66472628471 has 4 divisors (see below), whose sum is σ = 66839880744. Its totient is φ = 66105376200.

The previous prime is 66472628449. The next prime is 66472628513. The reversal of 66472628471 is 17482627466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66472628471 - 2²² = 66468434167 is a prime.

It is a super-3 number, since 3×66472628471³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66472648471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183625865 + ... + 183626226.

It is an arithmetic number, because the mean of its divisors is an integer number (16709970186).

Almost surely, 2^66472628471 is an apocalyptic number.

66472628471 is a deficient number, since it is larger than the sum of its proper divisors (367252273).

66472628471 is a wasteful number, since it uses less digits than its factorization.

66472628471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367252272.

The product of its digits is 5419008, while the sum is 53.

The spelling of 66472628471 in words is "sixty-six billion, four hundred seventy-two million, six hundred twenty-eight thousand, four hundred seventy-one".