21023401196588 has 72 divisors (see below), whose sum is σ = 44188629577344. Its totient is φ = 8717325926400.

The previous prime is 21023401196533. The next prime is 21023401196663. The reversal of 21023401196588 is 88569110432012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25483820 + ... + 26295852.

It is an arithmetic number, because the mean of its divisors is an integer number (613730966352).

Almost surely, 2^{21023401196588} is an apocalyptic number.

21023401196588 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 21023401196588, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22094314788672).

21023401196588 is an abundant number, since it is smaller than the sum of its proper divisors (23165228380756).

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

21023401196588 is a wasteful number, since it uses less digits than its factorization.

21023401196588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816343 (or 816334 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 21023401196588 in words is "twenty-one trillion, twenty-three billion, four hundred one million, one hundred ninety-six thousand, five hundred eighty-eight".