20560256450 has 48 divisors (see below), whose sum is σ = 40539251304. Its totient is φ = 7731225600.

The previous prime is 20560256447. The next prime is 20560256461. The reversal of 20560256450 is 5465206502.

It can be written as a sum of positive squares in 12 ways, for example, as 13599524689 + 6960731761 = 116617^2 + 83431^2 .

It is a super-3 number, since 3×20560256450³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20560256450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731660 + ... + 759240.

Almost surely, 2^20560256450 is an apocalyptic number.

20560256450 is a deficient number, since it is larger than the sum of its proper divisors (19978994854).

20560256450 is a wasteful number, since it uses less digits than its factorization.

20560256450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28487 (or 28482 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 20560256450 in words is "twenty billion, five hundred sixty million, two hundred fifty-six thousand, four hundred fifty".