20520111134 has 8 divisors (see below), whose sum is σ = 30781263288. Its totient is φ = 10259690040.

The previous prime is 20520111127. The next prime is 20520111173. The reversal of 20520111134 is 43111102502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106172 + ... + 228719.

It is an arithmetic number, because the mean of its divisors is an integer number (3847657911).

Almost surely, 2^20520111134 is an apocalyptic number.

20520111134 is a deficient number, since it is larger than the sum of its proper divisors (10261152154).

20520111134 is a wasteful number, since it uses less digits than its factorization.

20520111134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365530.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 20520111134 its reverse (43111102502), we get a palindrome (63631213636).

The spelling of 20520111134 in words is "twenty billion, five hundred twenty million, one hundred eleven thousand, one hundred thirty-four".