20560151340 has 72 divisors (see below), whose sum is σ = 62499593520. Its totient is φ = 5470944384.

The previous prime is 20560151333. The next prime is 20560151341. The reversal of 20560151340 is 4315106502.

20560151340 is a `hidden beast` number, since 2 + 0 + 5 + 601 + 5 + 13 + 40 = 666.

It is not an unprimeable number, because it can be changed into a prime (20560151341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38235 + ... + 206354.

It is an arithmetic number, because the mean of its divisors is an integer number (868049910).

Almost surely, 2^20560151340 is an apocalyptic number.

20560151340 is a gapful number since it is divisible by the number (20) 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 20560151340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31249796760).

20560151340 is an abundant number, since it is smaller than the sum of its proper divisors (41939442180).

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

20560151340 is a wasteful number, since it uses less digits than its factorization.

20560151340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245071 (or 245066 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20560151340 its reverse (4315106502), we get a palindrome (24875257842).

The spelling of 20560151340 in words is "twenty billion, five hundred sixty million, one hundred fifty-one thousand, three hundred forty".