20560953460 has 12 divisors (see below), whose sum is σ = 43178002308. Its totient is φ = 8224381376.

The previous prime is 20560953449. The next prime is 20560953463. The reversal of 20560953460 is 6435906502.

It can be written as a sum of positive squares in 2 ways, for example, as 16026547216 + 4534406244 = 126596^2 + 67338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560953463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514023817 + ... + 514023856.

It is an arithmetic number, because the mean of its divisors is an integer number (3598166859).

Almost surely, 2^20560953460 is an apocalyptic number.

20560953460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20560953460 is an abundant number, since it is smaller than the sum of its proper divisors (22617048848).

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

20560953460 is a wasteful number, since it uses less digits than its factorization.

20560953460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028047682 (or 1028047680 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 20560953460 in words is "twenty billion, five hundred sixty million, nine hundred fifty-three thousand, four hundred sixty".