20827008471 has 8 divisors (see below), whose sum is σ = 27779355504. Its totient is φ = 13879666880.

The previous prime is 20827008469. The next prime is 20827008487. The reversal of 20827008471 is 17480072802.

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

It is a cyclic number.

It is not a de Polignac number, because 20827008471 - 2¹ = 20827008469 is a prime.

It is a super-3 number, since 3×20827008471³ (a number of 32 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 (20827008071) 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, 1241640 + ... + 1258301.

It is an arithmetic number, because the mean of its divisors is an integer number (3472419438).

Almost surely, 2^20827008471 is an apocalyptic number.

20827008471 is a deficient number, since it is larger than the sum of its proper divisors (6952347033).

20827008471 is a wasteful number, since it uses less digits than its factorization.

20827008471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502721.

The product of its (nonzero) digits is 50176, while the sum is 39.

The spelling of 20827008471 in words is "twenty billion, eight hundred twenty-seven million, eight thousand, four hundred seventy-one".