20152440504 has 144 divisors (see below), whose sum is σ = 64256348520. Its totient is φ = 5688385920.

The previous prime is 20152440491. The next prime is 20152440523. The reversal of 20152440504 is 40504425102.

20152440504 is a `hidden beast` number, since 2 + 0 + 152 + 4 + 4 + 0 + 504 = 666.

It is a super-2 number, since 2×20152440504² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 258414 + ... + 327234.

Almost surely, 2^20152440504 is an apocalyptic number.

20152440504 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 20152440504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32128174260).

20152440504 is an abundant number, since it is smaller than the sum of its proper divisors (44103908016).

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

20152440504 is a wasteful number, since it uses less digits than its factorization.

20152440504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68930 (or 68916 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 20152440504 its reverse (40504425102), we get a palindrome (60656865606).

The spelling of 20152440504 in words is "twenty billion, one hundred fifty-two million, four hundred forty thousand, five hundred four".