20582118108 has 36 divisors (see below), whose sum is σ = 52513264440. Its totient is φ = 6796586016.

The previous prime is 20582118101. The next prime is 20582118149. The reversal of 20582118108 is 80181128502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20582118108² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20582118101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2667763 + ... + 2675466.

It is an arithmetic number, because the mean of its divisors is an integer number (1458701790).

Almost surely, 2^20582118108 is an apocalyptic number.

It is an amenable number.

20582118108 is an abundant number, since it is smaller than the sum of its proper divisors (31931146332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20582118108 is a wasteful number, since it uses less digits than its factorization.

20582118108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343346 (or 5343341 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 36.

The spelling of 20582118108 in words is "twenty billion, five hundred eighty-two million, one hundred eighteen thousand, one hundred eight".