20344524436 has 24 divisors (see below), whose sum is σ = 37575692000. Its totient is φ = 9611439264.

The previous prime is 20344524413. The next prime is 20344524437. The reversal of 20344524436 is 63442544302.

It is a super-2 number, since 2×20344524436² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20344524395 and 20344524404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344524437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324351 + ... + 381958.

Almost surely, 2^20344524436 is an apocalyptic number.

It is an amenable number.

20344524436 is a deficient number, since it is larger than the sum of its proper divisors (17231167564).

20344524436 is a wasteful number, since it uses less digits than its factorization.

20344524436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706711 (or 706709 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 37.

The spelling of 20344524436 in words is "twenty billion, three hundred forty-four million, five hundred twenty-four thousand, four hundred thirty-six".