20180243471 has 16 divisors (see below), whose sum is σ = 20438005536. Its totient is φ = 19924709376.

The previous prime is 20180243467. The next prime is 20180243497. The reversal of 20180243471 is 17434208102.

It is a cyclic number.

It is not a de Polignac number, because 20180243471 - 2² = 20180243467 is a prime.

It is a super-3 number, since 3×20180243471³ (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 (20180243411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19920761 + ... + 19921773.

It is an arithmetic number, because the mean of its divisors is an integer number (1277375346).

Almost surely, 2^20180243471 is an apocalyptic number.

20180243471 is a deficient number, since it is larger than the sum of its proper divisors (257762065).

20180243471 is a wasteful number, since it uses less digits than its factorization.

20180243471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 10752, while the sum is 32.

The spelling of 20180243471 in words is "twenty billion, one hundred eighty million, two hundred forty-three thousand, four hundred seventy-one".