20512222013535 has 32 divisors (see below), whose sum is σ = 37508234222592. Its totient is φ = 9376972999680.

The previous prime is 20512222013513. The next prime is 20512222013539. The reversal of 20512222013535 is 53531022221502.

It is not a de Polignac number, because 20512222013535 - 2¹¹ = 20512222011487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20512222013496 and 20512222013505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512222013539) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40589782 + ... + 41092028.

It is an arithmetic number, because the mean of its divisors is an integer number (1172132319456).

Almost surely, 2^{20512222013535} is an apocalyptic number.

20512222013535 is a deficient number, since it is larger than the sum of its proper divisors (16996012209057).

20512222013535 is a wasteful number, since it uses less digits than its factorization.

20512222013535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891223.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 20512222013535 in words is "twenty trillion, five hundred twelve billion, two hundred twenty-two million, thirteen thousand, five hundred thirty-five".