20132140784 has 160 divisors (see below), whose sum is σ = 47021990400. Its totient is φ = 8341132800.

The previous prime is 20132140729. The next prime is 20132140793. The reversal of 20132140784 is 48704123102.

It is a super-2 number, since 2×20132140784² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20132140784.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29475707 + ... + 29476389.

It is an arithmetic number, because the mean of its divisors is an integer number (293887440).

Almost surely, 2^20132140784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20132140784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23510995200).

20132140784 is an abundant number, since it is smaller than the sum of its proper divisors (26889849616).

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

20132140784 is a wasteful number, since it uses less digits than its factorization.

20132140784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 20132140784 its reverse (48704123102), we get a palindrome (68836263886).

The spelling of 20132140784 in words is "twenty billion, one hundred thirty-two million, one hundred forty thousand, seven hundred eighty-four".