20105340513052 has 6 divisors (see below), whose sum is σ = 35184345897848. Its totient is φ = 10052670256524.

The previous prime is 20105340513043. The next prime is 20105340513113. The reversal of 20105340513052 is 25031504350102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2513167564128 + ... + 2513167564135.

Almost surely, 2^{20105340513052} is an apocalyptic number.

It is an amenable number.

20105340513052 is a deficient number, since it is larger than the sum of its proper divisors (15079005384796).

20105340513052 is a wasteful number, since it uses less digits than its factorization.

20105340513052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5026335128267 (or 5026335128265 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 20105340513052 its reverse (25031504350102), we get a palindrome (45136844863154).

The spelling of 20105340513052 in words is "twenty trillion, one hundred five billion, three hundred forty million, five hundred thirteen thousand, fifty-two".