20656363213342 has 16 divisors (see below), whose sum is σ = 31038530527872. Its totient is φ = 10310187733720.

The previous prime is 20656363213273. The next prime is 20656363213373. The reversal of 20656363213342 is 24331236365602.

It is a junction number, because it is equal to n+sod(n) for n = 20656363213292 and 20656363213301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31257117 + ... + 31911127.

It is an arithmetic number, because the mean of its divisors is an integer number (1939908157992).

Almost surely, 2^{20656363213342} is an apocalyptic number.

20656363213342 is a deficient number, since it is larger than the sum of its proper divisors (10382167314530).

20656363213342 is a wasteful number, since it uses less digits than its factorization.

20656363213342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681503.

The product of its (nonzero) digits is 2799360, while the sum is 46.

Adding to 20656363213342 its reverse (24331236365602), we get a palindrome (44987599578944).

The spelling of 20656363213342 in words is "twenty trillion, six hundred fifty-six billion, three hundred sixty-three million, two hundred thirteen thousand, three hundred forty-two".