20355242684286 has 32 divisors (see below), whose sum is σ = 40892872497408. Its totient is φ = 6754687493760.

The previous prime is 20355242684267. The next prime is 20355242684323. The reversal of 20355242684286 is 68248624255302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17961126 + ... + 19060758.

It is an arithmetic number, because the mean of its divisors is an integer number (1277902265544).

Almost surely, 2^{20355242684286} is an apocalyptic number.

20355242684286 is an abundant number, since it is smaller than the sum of its proper divisors (20537629813122).

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

20355242684286 is a wasteful number, since it uses less digits than its factorization.

20355242684286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113456.

The product of its (nonzero) digits is 44236800, while the sum is 57.

The spelling of 20355242684286 in words is "twenty trillion, three hundred fifty-five billion, two hundred forty-two million, six hundred eighty-four thousand, two hundred eighty-six".