20558229471 has 24 divisors (see below), whose sum is σ = 32759462736. Its totient is φ = 12342648960.

The previous prime is 20558229469. The next prime is 20558229473. The reversal of 20558229471 is 17492285502.

20558229471 is a `hidden beast` number, since 2 + 0 + 5 + 582 + 29 + 47 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (20558229469) and next prime (20558229473).

It is not a de Polignac number, because 20558229471 - 2¹ = 20558229469 is a prime.

It is a super-3 number, since 3×20558229471³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20558229473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2138025 + ... + 2147618.

It is an arithmetic number, because the mean of its divisors is an integer number (1364977614).

Almost surely, 2^20558229471 is an apocalyptic number.

20558229471 is a deficient number, since it is larger than the sum of its proper divisors (12201233265).

20558229471 is a wasteful number, since it uses less digits than its factorization.

20558229471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4285703 (or 4285700 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 20558229471 in words is "twenty billion, five hundred fifty-eight million, two hundred twenty-nine thousand, four hundred seventy-one".