21155141262134 has 16 divisors (see below), whose sum is σ = 35461833248016. Its totient is φ = 9381437366400.

The previous prime is 21155141262133. The next prime is 21155141262137. The reversal of 21155141262134 is 43126214155112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21155141262133) 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 7 ways as a sum of consecutive naturals, for example, 11726795807 + ... + 11726797610.

It is an arithmetic number, because the mean of its divisors is an integer number (2216364578001).

Almost surely, 2^{21155141262134} is an apocalyptic number.

21155141262134 is a deficient number, since it is larger than the sum of its proper divisors (14306691985882).

21155141262134 is a wasteful number, since it uses less digits than its factorization.

21155141262134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23453593471.

The product of its digits is 57600, while the sum is 38.

The spelling of 21155141262134 in words is "twenty-one trillion, one hundred fifty-five billion, one hundred forty-one million, two hundred sixty-two thousand, one hundred thirty-four".