20252184878653 has 32 divisors (see below), whose sum is σ = 24997337487360. Its totient is φ = 15977716171200.

The previous prime is 20252184878579. The next prime is 20252184878669. The reversal of 20252184878653 is 35687848125202.

It is a happy number.

It is not a de Polignac number, because 20252184878653 - 2¹³ = 20252184870461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20252184878591 and 20252184878600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252184878683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153444576 + ... + 153576502.

It is an arithmetic number, because the mean of its divisors is an integer number (781166796480).

Almost surely, 2^{20252184878653} is an apocalyptic number.

It is an amenable number.

20252184878653 is a deficient number, since it is larger than the sum of its proper divisors (4745152608707).

20252184878653 is a wasteful number, since it uses less digits than its factorization.

20252184878653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136777.

The product of its (nonzero) digits is 51609600, while the sum is 61.

The spelling of 20252184878653 in words is "twenty trillion, two hundred fifty-two billion, one hundred eighty-four million, eight hundred seventy-eight thousand, six hundred fifty-three".