20355112233406 has 8 divisors (see below), whose sum is σ = 30719985334344. Its totient is φ = 10115117121960.

The previous prime is 20355112233371. The next prime is 20355112233409. The reversal of 20355112233406 is 60433221155302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355112233409) 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, 31219496965 + ... + 31219497616.

It is an arithmetic number, because the mean of its divisors is an integer number (3839998166793).

Almost surely, 2^{20355112233406} is an apocalyptic number.

20355112233406 is a deficient number, since it is larger than the sum of its proper divisors (10364873100938).

20355112233406 is a wasteful number, since it uses less digits than its factorization.

20355112233406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62438994746.

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 20355112233406 its reverse (60433221155302), we get a palindrome (80788333388708).

The spelling of 20355112233406 in words is "twenty trillion, three hundred fifty-five billion, one hundred twelve million, two hundred thirty-three thousand, four hundred six".