55135321549 has 16 divisors (see below), whose sum is σ = 69766119936. Its totient is φ = 42321351600.

The previous prime is 55135321547. The next prime is 55135321561. The reversal of 55135321549 is 94512353155.

It is not a de Polignac number, because 55135321549 - 2¹ = 55135321547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55135321543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5338447 + ... + 5348764.

It is an arithmetic number, because the mean of its divisors is an integer number (4360382496).

Almost surely, 2^55135321549 is an apocalyptic number.

It is an amenable number.

55135321549 is a deficient number, since it is larger than the sum of its proper divisors (14630798387).

55135321549 is a wasteful number, since it uses less digits than its factorization.

55135321549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10687296.

The product of its digits is 405000, while the sum is 43.

The spelling of 55135321549 in words is "fifty-five billion, one hundred thirty-five million, three hundred twenty-one thousand, five hundred forty-nine".