20502311002224 has 80 divisors (see below), whose sum is σ = 54793767453600. Its totient is φ = 6598070535168.

The previous prime is 20502311002171. The next prime is 20502311002273. The reversal of 20502311002224 is 42220011320502.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20502311002194 and 20502311002203.

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, 24665262 + ... + 25482930.

It is an arithmetic number, because the mean of its divisors is an integer number (684922093170).

Almost surely, 2^{20502311002224} is an apocalyptic number.

20502311002224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20502311002224 is an abundant number, since it is smaller than the sum of its proper divisors (34291456451376).

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

20502311002224 is a wasteful number, since it uses less digits than its factorization.

20502311002224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835722 (or 835716 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20502311002224 its reverse (42220011320502), we get a palindrome (62722322322726).

The spelling of 20502311002224 in words is "twenty trillion, five hundred two billion, three hundred eleven million, two thousand, two hundred twenty-four".