20452140132 has 96 divisors (see below), whose sum is σ = 52638136320. Its totient is φ = 6151749120.

The previous prime is 20452140083. The next prime is 20452140211. The reversal of 20452140132 is 23104125402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255713 + ... + 1271895.

It is an arithmetic number, because the mean of its divisors is an integer number (548313920).

Almost surely, 2^20452140132 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 20452140132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26319068160).

20452140132 is an abundant number, since it is smaller than the sum of its proper divisors (32185996188).

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

20452140132 is a wasteful number, since it uses less digits than its factorization.

20452140132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16473 (or 16471 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20452140132 its reverse (23104125402), we get a palindrome (43556265534).

The spelling of 20452140132 in words is "twenty billion, four hundred fifty-two million, one hundred forty thousand, one hundred thirty-two".