28646620320471 has 8 divisors (see below), whose sum is σ = 38195602935024. Its totient is φ = 19097692293120.

The previous prime is 28646620320469. The next prime is 28646620320497. The reversal of 28646620320471 is 17402302664682.

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

It is not a de Polignac number, because 28646620320471 - 2¹ = 28646620320469 is a prime.

It is a super-3 number, since 3×28646620320471³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28646620320401) 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, 12406186 + ... + 14532951.

It is an arithmetic number, because the mean of its divisors is an integer number (4774450366878).

Almost surely, 2^{28646620320471} is an apocalyptic number.

28646620320471 is a deficient number, since it is larger than the sum of its proper divisors (9548982614553).

28646620320471 is a wasteful number, since it uses less digits than its factorization.

28646620320471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27293601.

The product of its (nonzero) digits is 4644864, while the sum is 51.

The spelling of 28646620320471 in words is "twenty-eight trillion, six hundred forty-six billion, six hundred twenty million, three hundred twenty thousand, four hundred seventy-one".