21046244504000 has 112 divisors (see below), whose sum is σ = 52260766574016. Its totient is φ = 8395926912000.

The previous prime is 21046244503997. The next prime is 21046244504063. The reversal of 21046244504000 is 40544264012.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 542516 + ... + 6510515.

It is an arithmetic number, because the mean of its divisors is an integer number (466613987268).

Almost surely, 2^{21046244504000} is an apocalyptic number.

21046244504000 is a gapful number since it is divisible by the number (20) 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 21046244504000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26130383287008).

21046244504000 is an abundant number, since it is smaller than the sum of its proper divisors (31214522070016).

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

21046244504000 is an equidigital number, since it uses as much as digits as its factorization.

21046244504000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053431 (or 7053411 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 21046244504000 its reverse (40544264012), we get a palindrome (21086788768012).

The spelling of 21046244504000 in words is "twenty-one trillion, forty-six billion, two hundred forty-four million, five hundred four thousand".