20087185134 has 32 divisors (see below), whose sum is σ = 41538871296. Its totient is φ = 6469025760.

The previous prime is 20087185109. The next prime is 20087185169. The reversal of 20087185134 is 43158178002.

It is a junction number, because it is equal to n+sod(n) for n = 20087185092 and 20087185101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23944 + ... + 201860.

It is an arithmetic number, because the mean of its divisors is an integer number (1298089728).

Almost surely, 2^20087185134 is an apocalyptic number.

20087185134 is an abundant number, since it is smaller than the sum of its proper divisors (21451686162).

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

20087185134 is a wasteful number, since it uses less digits than its factorization.

20087185134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178560.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 20087185134 in words is "twenty billion, eighty-seven million, one hundred eighty-five thousand, one hundred thirty-four".