20560152456 has 128 divisors (see below), whose sum is σ = 59661792000. Its totient is φ = 6548027904.

The previous prime is 20560152367. The next prime is 20560152463. The reversal of 20560152456 is 65425106502.

20560152456 is a `hidden beast` number, since 2 + 0 + 5 + 601 + 5 + 2 + 45 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20560152456.

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, 5925090 + ... + 5928558.

It is an arithmetic number, because the mean of its divisors is an integer number (466107750).

Almost surely, 2^20560152456 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 20560152456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29830896000).

20560152456 is an abundant number, since it is smaller than the sum of its proper divisors (39101639544).

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

20560152456 is a wasteful number, since it uses less digits than its factorization.

20560152456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700 (or 4690 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 20560152456 its reverse (65425106502), we get a palindrome (85985258958).

The spelling of 20560152456 in words is "twenty billion, five hundred sixty million, one hundred fifty-two thousand, four hundred fifty-six".