20436327504 has 180 divisors, whose sum is σ = 60989504160. Its totient is φ = 6386734080.

The previous prime is 20436327493. The next prime is 20436327511. The reversal of 20436327504 is 40572363402.

20436327504 is a `hidden beast` number, since 20 + 4 + 363 + 275 + 0 + 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12941787 + ... + 12943365.

Almost surely, 2^20436327504 is an apocalyptic number.

20436327504 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 20436327504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30494752080).

20436327504 is an abundant number, since it is smaller than the sum of its proper divisors (40553176656).

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

20436327504 is a wasteful number, since it uses less digits than its factorization.

20436327504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 20436327504 in words is "twenty billion, four hundred thirty-six million, three hundred twenty-seven thousand, five hundred four".