20213103144432 has 40 divisors (see below), whose sum is σ = 56964199772160. Its totient is φ = 6125182770880.

The previous prime is 20213103144427. The next prime is 20213103144449. The reversal of 20213103144432 is 23444130131202.

It is a self number, because there is not a number n which added to its sum of digits gives 20213103144432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19141195632 + ... + 19141196687.

It is an arithmetic number, because the mean of its divisors is an integer number (1424104994304).

Almost surely, 2^{20213103144432} is an apocalyptic number.

20213103144432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20213103144432 is an abundant number, since it is smaller than the sum of its proper divisors (36751096627728).

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

20213103144432 is a wasteful number, since it uses less digits than its factorization.

20213103144432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38282392341 (or 38282392335 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 20213103144432 its reverse (23444130131202), we get a palindrome (43657233275634).

The spelling of 20213103144432 in words is "twenty trillion, two hundred thirteen billion, one hundred three million, one hundred forty-four thousand, four hundred thirty-two".