21359652588 has 96 divisors (see below), whose sum is σ = 56056627200. Its totient is φ = 7032780288.

The previous prime is 21359652583. The next prime is 21359652599. The reversal of 21359652588 is 88525695312.

It is a happy number.

21359652588 is a `hidden beast` number, since 2 + 1 + 3 + 5 + 9 + 6 + 52 + 588 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (21359652583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6357253 + ... + 6360611.

It is an arithmetic number, because the mean of its divisors is an integer number (583923200).

Almost surely, 2^21359652588 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 21359652588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28028313600).

21359652588 is an abundant number, since it is smaller than the sum of its proper divisors (34696974612).

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

21359652588 is a wasteful number, since it uses less digits than its factorization.

21359652588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076 (or 4068 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 54.

The spelling of 21359652588 in words is "twenty-one billion, three hundred fifty-nine million, six hundred fifty-two thousand, five hundred eighty-eight".