20158504704 has 216 divisors, whose sum is σ = 62992114640. Its totient is φ = 6163070976.

The previous prime is 20158504693. The next prime is 20158504739. The reversal of 20158504704 is 40740585102.

20158504704 is a `hidden beast` number, since 2 + 0 + 1 + 585 + 0 + 4 + 70 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 4880112 + ... + 4884240.

Almost surely, 2^20158504704 is an apocalyptic number.

20158504704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20158504704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31496057320).

20158504704 is an abundant number, since it is smaller than the sum of its proper divisors (42833609936).

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

20158504704 is a wasteful number, since it uses less digits than its factorization.

20158504704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327 (or 4310 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 20158504704 in words is "twenty billion, one hundred fifty-eight million, five hundred four thousand, seven hundred four".