20676912471 has 8 divisors (see below), whose sum is σ = 30632462960. Its totient is φ = 13784608296.

The previous prime is 20676912463. The next prime is 20676912479. The reversal of 20676912471 is 17421967602.

20676912471 is a `hidden beast` number, since 20 + 6 + 76 + 91 + 2 + 471 = 666.

It is an interprime number because it is at equal distance from previous prime (20676912463) and next prime (20676912479).

It is not a de Polignac number, because 20676912471 - 2³ = 20676912463 is a prime.

It is a super-3 number, since 3×20676912471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20676912479) 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, 382905760 + ... + 382905813.

It is an arithmetic number, because the mean of its divisors is an integer number (3829057870).

Almost surely, 2^20676912471 is an apocalyptic number.

20676912471 is a deficient number, since it is larger than the sum of its proper divisors (9955550489).

20676912471 is an equidigital number, since it uses as much as digits as its factorization.

20676912471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765811582 (or 765811576 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 20676912471 in words is "twenty billion, six hundred seventy-six million, nine hundred twelve thousand, four hundred seventy-one".