20501045135 has 16 divisors (see below), whose sum is σ = 24705487296. Its totient is φ = 16331497728.

The previous prime is 20501045107. The next prime is 20501045141. The reversal of 20501045135 is 53154010502.

It is a cyclic number.

It is not a de Polignac number, because 20501045135 - 2¹² = 20501041039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1140437 + ... + 1158273.

It is an arithmetic number, because the mean of its divisors is an integer number (1544092956).

Almost surely, 2^20501045135 is an apocalyptic number.

20501045135 is a deficient number, since it is larger than the sum of its proper divisors (4204442161).

20501045135 is a wasteful number, since it uses less digits than its factorization.

20501045135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18802.

The product of its (nonzero) digits is 3000, while the sum is 26.

Adding to 20501045135 its reverse (53154010502), we get a palindrome (73655055637).

The spelling of 20501045135 in words is "twenty billion, five hundred one million, forty-five thousand, one hundred thirty-five".