20352135653111 has 4 divisors (see below), whose sum is σ = 21549320103312. Its totient is φ = 19154951202912.

The previous prime is 20352135653107. The next prime is 20352135653167. The reversal of 20352135653111 is 11135653125302.

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

It is a cyclic number.

It is not a de Polignac number, because 20352135653111 - 2² = 20352135653107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352135653911) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 598592225075 + ... + 598592225108.

It is an arithmetic number, because the mean of its divisors is an integer number (5387330025828).

Almost surely, 2^{20352135653111} is an apocalyptic number.

20352135653111 is a deficient number, since it is larger than the sum of its proper divisors (1197184450201).

20352135653111 is a wasteful number, since it uses less digits than its factorization.

20352135653111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197184450200.

The product of its (nonzero) digits is 81000, while the sum is 38.

Adding to 20352135653111 its reverse (11135653125302), we get a palindrome (31487788778413).

The spelling of 20352135653111 in words is "twenty trillion, three hundred fifty-two billion, one hundred thirty-five million, six hundred fifty-three thousand, one hundred eleven".