55135011206131 has 4 divisors (see below), whose sum is σ = 55135268768392. Its totient is φ = 55134753643872.

The previous prime is 55135011206129. The next prime is 55135011206153. The reversal of 55135011206131 is 13160211053155.

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 55135011206131 - 2¹ = 55135011206129 is a prime.

It is a super-2 number, since 2×55135011206131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55135011204131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128459766 + ... + 128888251.

It is an arithmetic number, because the mean of its divisors is an integer number (13783817192098).

Almost surely, 2^{55135011206131} is an apocalyptic number.

55135011206131 is a deficient number, since it is larger than the sum of its proper divisors (257562261).

55135011206131 is a wasteful number, since it uses less digits than its factorization.

55135011206131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257562260.

The product of its (nonzero) digits is 13500, while the sum is 34.

Adding to 55135011206131 its reverse (13160211053155), we get a palindrome (68295222259286).

The spelling of 55135011206131 in words is "fifty-five trillion, one hundred thirty-five billion, eleven million, two hundred six thousand, one hundred thirty-one".