20412235544520 has 32 divisors (see below), whose sum is σ = 61236706633920. Its totient is φ = 5443262811840.

The previous prime is 20412235544501. The next prime is 20412235544563. The reversal of 20412235544520 is 2544553221402.

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, 85050981316 + ... + 85050981555.

It is an arithmetic number, because the mean of its divisors is an integer number (1913647082310).

Almost surely, 2^{20412235544520} is an apocalyptic number.

20412235544520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412235544520 is an abundant number, since it is smaller than the sum of its proper divisors (40824471089400).

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

20412235544520 is a wasteful number, since it uses less digits than its factorization.

20412235544520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170101962885 (or 170101962881 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 20412235544520 its reverse (2544553221402), we get a palindrome (22956788765922).

The spelling of 20412235544520 in words is "twenty trillion, four hundred twelve billion, two hundred thirty-five million, five hundred forty-four thousand, five hundred twenty".