20123203158 has 24 divisors (see below), whose sum is σ = 43841166096. Its totient is φ = 6670674000.

The previous prime is 20123203157. The next prime is 20123203159. The reversal of 20123203158 is 85130232102.

20123203158 is a `hidden beast` number, since 20 + 1 + 2 + 320 + 315 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (20123203157) and next prime (20123203159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123203157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3085018 + ... + 3091533.

It is an arithmetic number, because the mean of its divisors is an integer number (1826715254).

Almost surely, 2^20123203158 is an apocalyptic number.

20123203158 is an abundant number, since it is smaller than the sum of its proper divisors (23717962938).

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

20123203158 is a wasteful number, since it uses less digits than its factorization.

20123203158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176740 (or 6176737 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 20123203158 in words is "twenty billion, one hundred twenty-three million, two hundred three thousand, one hundred fifty-eight".