20435004503536 has 80 divisors (see below), whose sum is σ = 45562031843328. Its totient is φ = 8697440505600.

The previous prime is 20435004503527. The next prime is 20435004503581. The reversal of 20435004503536 is 63530540053402.

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, 9956481 + ... + 11832223.

Almost surely, 2^{20435004503536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20435004503536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22781015921664).

20435004503536 is an abundant number, since it is smaller than the sum of its proper divisors (25127027339792).

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

20435004503536 is a wasteful number, since it uses less digits than its factorization.

20435004503536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876430 (or 1876424 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 40.

Adding to 20435004503536 its reverse (63530540053402), we get a palindrome (83965544556938).

The spelling of 20435004503536 in words is "twenty trillion, four hundred thirty-five billion, four million, five hundred three thousand, five hundred thirty-six".