5421020523444 has 144 divisors (see below), whose sum is σ = 13889761966080. Its totient is φ = 1782588487680.

The previous prime is 5421020523419. The next prime is 5421020523461. The reversal of 5421020523444 is 4443250201245.

5421020523444 is a `hidden beast` number, since 5 + 4 + 2 + 1 + 0 + 205 + 2 + 3 + 444 = 666.

It is a super-2 number, since 2×5421020523444² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5421020523399 and 5421020523408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 599599564 + ... + 599608604.

It is an arithmetic number, because the mean of its divisors is an integer number (96456680320).

Almost surely, 2^{5421020523444} is an apocalyptic number.

It is an amenable number.

5421020523444 is an abundant number, since it is smaller than the sum of its proper divisors (8468741442636).

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

5421020523444 is a wasteful number, since it uses less digits than its factorization.

5421020523444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9910 (or 9905 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 5421020523444 its reverse (4443250201245), we get a palindrome (9864270724689).

The spelling of 5421020523444 in words is "five trillion, four hundred twenty-one billion, twenty million, five hundred twenty-three thousand, four hundred forty-four".