20850040134 has 48 divisors (see below), whose sum is σ = 56322190080. Its totient is φ = 5415594480.

The previous prime is 20850040121. The next prime is 20850040147. The reversal of 20850040134 is 43104005802.

20850040134 is a `hidden beast` number, since 20 + 8 + 500 + 4 + 0 + 134 = 666.

It is an interprime number because it is at equal distance from previous prime (20850040121) and next prime (20850040147).

It is a junction number, because it is equal to n+sod(n) for n = 20850040098 and 20850040107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7520274 + ... + 7523045.

It is an arithmetic number, because the mean of its divisors is an integer number (1173378960).

Almost surely, 2^20850040134 is an apocalyptic number.

20850040134 is an abundant number, since it is smaller than the sum of its proper divisors (35472149946).

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

20850040134 is a wasteful number, since it uses less digits than its factorization.

20850040134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15043345 (or 15043342 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20850040134 its reverse (43104005802), we get a palindrome (63954045936).

The spelling of 20850040134 in words is "twenty billion, eight hundred fifty million, forty thousand, one hundred thirty-four".