20081594471 has 8 divisors (see below), whose sum is σ = 21461585040. Its totient is φ = 18723683968.

The previous prime is 20081594461. The next prime is 20081594557. The reversal of 20081594471 is 17449518002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20081594471 is a prime.

It is a super-3 number, since 3×20081594471³ (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 (20081594431) 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, 5518136 + ... + 5521773.

It is an arithmetic number, because the mean of its divisors is an integer number (2682698130).

Almost surely, 2^20081594471 is an apocalyptic number.

20081594471 is a deficient number, since it is larger than the sum of its proper divisors (1379990569).

20081594471 is a wasteful number, since it uses less digits than its factorization.

20081594471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11040033.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 20081594471 in words is "twenty billion, eighty-one million, five hundred ninety-four thousand, four hundred seventy-one".