20500001134 has 16 divisors (see below), whose sum is σ = 30930422400. Its totient is φ = 10189892664.

The previous prime is 20500001087. The next prime is 20500001141. The reversal of 20500001134 is 43110000502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1934719 + ... + 1945285.

It is an arithmetic number, because the mean of its divisors is an integer number (1933151400).

Almost surely, 2^20500001134 is an apocalyptic number.

20500001134 is a deficient number, since it is larger than the sum of its proper divisors (10430421266).

20500001134 is a wasteful number, since it uses less digits than its factorization.

20500001134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16167.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20500001134 its reverse (43110000502), we get a palindrome (63610001636).

The spelling of 20500001134 in words is "twenty billion, five hundred million, one thousand, one hundred thirty-four".