20258682888 has 64 divisors (see below), whose sum is σ = 52521984000. Its totient is φ = 6504003072.

The previous prime is 20258682887. The next prime is 20258682901. The reversal of 20258682888 is 88828685202.

It is a Cunningham number, because it is equal to 142333²-1.

It is not an unprimeable number, because it can be changed into a prime (20258682881) 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, 249081 + ... + 320247.

It is an arithmetic number, because the mean of its divisors is an integer number (820656000).

Almost surely, 2^20258682888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20258682888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26260992000).

20258682888 is an abundant number, since it is smaller than the sum of its proper divisors (32263301112).

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

20258682888 is a wasteful number, since it uses less digits than its factorization.

20258682888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71614 (or 71610 counting only the distinct ones).

The product of its (nonzero) digits is 7864320, while the sum is 57.

The spelling of 20258682888 in words is "twenty billion, two hundred fifty-eight million, six hundred eighty-two thousand, eight hundred eighty-eight".