20155000158 has 48 divisors (see below), whose sum is σ = 47209939920. Its totient is φ = 6192713088.

The previous prime is 20155000133. The next prime is 20155000163. The reversal of 20155000158 is 85100055102.

20155000158 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 500 + 0 + 158 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 783735 + ... + 809042.

It is an arithmetic number, because the mean of its divisors is an integer number (983540415).

Almost surely, 2^20155000158 is an apocalyptic number.

20155000158 is an abundant number, since it is smaller than the sum of its proper divisors (27054939762).

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

20155000158 is a wasteful number, since it uses less digits than its factorization.

20155000158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592841 (or 1592838 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 20155000158 in words is "twenty billion, one hundred fifty-five million, one hundred fifty-eight", and thus it is an aban number.