20257612000135 has 8 divisors (see below), whose sum is σ = 24395032403280. Its totient is φ = 16148824264704.

The previous prime is 20257612000081. The next prime is 20257612000181. The reversal of 20257612000135 is 53100021675202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20257612000135 - 2⁷ = 20257612000007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20257612000135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7158165370 + ... + 7158168199.

It is an arithmetic number, because the mean of its divisors is an integer number (3049379050410).

Almost surely, 2^{20257612000135} is an apocalyptic number.

20257612000135 is a deficient number, since it is larger than the sum of its proper divisors (4137420403145).

20257612000135 is a wasteful number, since it uses less digits than its factorization.

20257612000135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316333857.

The product of its (nonzero) digits is 25200, while the sum is 34.

Adding to 20257612000135 its reverse (53100021675202), we get a palindrome (73357633675337).

The spelling of 20257612000135 in words is "twenty trillion, two hundred fifty-seven billion, six hundred twelve million, one hundred thirty-five", and thus it is an aban number.