20504524653 has 16 divisors (see below), whose sum is σ = 32163960960. Its totient is φ = 12865583808.

The previous prime is 20504524639. The next prime is 20504524657. The reversal of 20504524653 is 35642540502.

20504524653 is a `hidden beast` number, since 20 + 50 + 4 + 524 + 65 + 3 = 666.

It is not a de Polignac number, because 20504524653 - 2¹⁰ = 20504523629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504524657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22335625 + ... + 22336542.

It is an arithmetic number, because the mean of its divisors is an integer number (2010247560).

Almost surely, 2^20504524653 is an apocalyptic number.

It is an amenable number.

20504524653 is a deficient number, since it is larger than the sum of its proper divisors (11659436307).

20504524653 is a wasteful number, since it uses less digits than its factorization.

20504524653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44672193 (or 44672187 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 20504524653 in words is "twenty billion, five hundred four million, five hundred twenty-four thousand, six hundred fifty-three".