20623610588 has 72 divisors (see below), whose sum is σ = 44989599312. Its totient is φ = 8218430976.

The previous prime is 20623610573. The next prime is 20623610599. The reversal of 20623610588 is 88501632602.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 239270 + ... + 313842.

It is an arithmetic number, because the mean of its divisors is an integer number (624855546).

Almost surely, 2^20623610588 is an apocalyptic number.

20623610588 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20623610588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22494799656).

20623610588 is an abundant number, since it is smaller than the sum of its proper divisors (24365988724).

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

20623610588 is a wasteful number, since it uses less digits than its factorization.

20623610588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74691 (or 74682 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 20623610588 in words is "twenty billion, six hundred twenty-three million, six hundred ten thousand, five hundred eighty-eight".