20002015536 has 80 divisors (see below), whose sum is σ = 52909232640. Its totient is φ = 6507889920.

The previous prime is 20002015511. The next prime is 20002015541. The reversal of 20002015536 is 63551020002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4681081 + ... + 4685351.

It is an arithmetic number, because the mean of its divisors is an integer number (661365408).

Almost surely, 2^20002015536 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 20002015536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26454616320).

20002015536 is an abundant number, since it is smaller than the sum of its proper divisors (32907217104).

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

20002015536 is a wasteful number, since it uses less digits than its factorization.

20002015536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6594 (or 6588 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20002015536 its reverse (63551020002), we get a palindrome (83553035538).

The spelling of 20002015536 in words is "twenty billion, two million, fifteen thousand, five hundred thirty-six".