20511410206602 has 96 divisors (see below), whose sum is σ = 48904581285504. Its totient is φ = 5715098457600.

The previous prime is 20511410206589. The next prime is 20511410206613. The reversal of 20511410206602 is 20660201411502.

It is a self number, because there is not a number n which added to its sum of digits gives 20511410206602.

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, 28855702 + ... + 29557982.

It is an arithmetic number, because the mean of its divisors is an integer number (509422721724).

Almost surely, 2^{20511410206602} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20511410206602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24452290642752).

20511410206602 is an abundant number, since it is smaller than the sum of its proper divisors (28393171078902).

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

20511410206602 is a wasteful number, since it uses less digits than its factorization.

20511410206602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704764 (or 704757 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20511410206602 in words is "twenty trillion, five hundred eleven billion, four hundred ten million, two hundred six thousand, six hundred two".