20351335140135 has 12 divisors (see below), whose sum is σ = 35275647576312. Its totient is φ = 10854045408048.

The previous prime is 20351335140113. The next prime is 20351335140173. The reversal of 20351335140135 is 53104153315302.

20351335140135 is a `hidden beast` number, since 2 + 0 + 3 + 5 + 1 + 3 + 3 + 514 + 0 + 135 = 666.

It is not a de Polignac number, because 20351335140135 - 2⁷ = 20351335140007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20351335140135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226125945957 + ... + 226125946046.

It is an arithmetic number, because the mean of its divisors is an integer number (2939637298026).

Almost surely, 2^{20351335140135} is an apocalyptic number.

20351335140135 is a deficient number, since it is larger than the sum of its proper divisors (14924312436177).

20351335140135 is a wasteful number, since it uses less digits than its factorization.

20351335140135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452251892014 (or 452251892011 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 20351335140135 its reverse (53104153315302), we get a palindrome (73455488455437).

The spelling of 20351335140135 in words is "twenty trillion, three hundred fifty-one billion, three hundred thirty-five million, one hundred forty thousand, one hundred thirty-five".