20502135114 has 32 divisors (see below), whose sum is σ = 41816062080. Its totient is φ = 6698981952.

The previous prime is 20502135113. The next prime is 20502135131. The reversal of 20502135114 is 41153120502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20502135113) by changing a digit.

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, 326347 + ... + 384065.

It is an arithmetic number, because the mean of its divisors is an integer number (1306751940).

Almost surely, 2^20502135114 is an apocalyptic number.

20502135114 is an abundant number, since it is smaller than the sum of its proper divisors (21313926966).

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

20502135114 is a wasteful number, since it uses less digits than its factorization.

20502135114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58894.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20502135114 its reverse (41153120502), we get a palindrome (61655255616).

The spelling of 20502135114 in words is "twenty billion, five hundred two million, one hundred thirty-five thousand, one hundred fourteen".