20541334155 has 32 divisors (see below), whose sum is σ = 34308887040. Its totient is φ = 10474844160.

The previous prime is 20541334129. The next prime is 20541334183. The reversal of 20541334155 is 55143314502.

It is not a de Polignac number, because 20541334155 - 2⁸ = 20541333899 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 961995 + ... + 983115.

It is an arithmetic number, because the mean of its divisors is an integer number (1072152720).

Almost surely, 2^20541334155 is an apocalyptic number.

20541334155 is a deficient number, since it is larger than the sum of its proper divisors (13767552885).

20541334155 is a wasteful number, since it uses less digits than its factorization.

20541334155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23971.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 20541334155 its reverse (55143314502), we get a palindrome (75684648657).

The spelling of 20541334155 in words is "twenty billion, five hundred forty-one million, three hundred thirty-four thousand, one hundred fifty-five".