20630253626342 has 4 divisors (see below), whose sum is σ = 30945380439516. Its totient is φ = 10315126813170.

The previous prime is 20630253626317. The next prime is 20630253626357. The reversal of 20630253626342 is 24362635203602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20630253626293 and 20630253626302.

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 as a sum of consecutive naturals, namely, 5157563406584 + ... + 5157563406587.

It is an arithmetic number, because the mean of its divisors is an integer number (7736345109879).

Almost surely, 2^{20630253626342} is an apocalyptic number.

20630253626342 is a deficient number, since it is larger than the sum of its proper divisors (10315126813174).

20630253626342 is a wasteful number, since it uses less digits than its factorization.

20630253626342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10315126813173.

The product of its (nonzero) digits is 1866240, while the sum is 44.

Adding to 20630253626342 its reverse (24362635203602), we get a palindrome (44992888829944).

The spelling of 20630253626342 in words is "twenty trillion, six hundred thirty billion, two hundred fifty-three million, six hundred twenty-six thousand, three hundred forty-two".