20413666431 has 6 divisors (see below), whose sum is σ = 29486407080. Its totient is φ = 13609110948.

The previous prime is 20413666417. The next prime is 20413666433. The reversal of 20413666431 is 13466631402.

It is not a de Polignac number, because 20413666431 - 2⁷ = 20413666303 is a prime.

It is a super-3 number, since 3×20413666431³ (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 (20413666433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1134092571 + ... + 1134092588.

It is an arithmetic number, because the mean of its divisors is an integer number (4914401180).

Almost surely, 2^20413666431 is an apocalyptic number.

20413666431 is a deficient number, since it is larger than the sum of its proper divisors (9072740649).

20413666431 is a wasteful number, since it uses less digits than its factorization.

20413666431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268185165 (or 2268185162 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 20413666431 in words is "twenty billion, four hundred thirteen million, six hundred sixty-six thousand, four hundred thirty-one".