55115323544 has 24 divisors (see below), whose sum is σ = 105923251380. Its totient is φ = 26885517120.

The previous prime is 55115323507. The next prime is 55115323547. The reversal of 55115323544 is 44532351155.

It is a junction number, because it is equal to n+sod(n) for n = 55115323498 and 55115323507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55115323547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2035754 + ... + 2062649.

Almost surely, 2^55115323544 is an apocalyptic number.

It is an amenable number.

55115323544 is a deficient number, since it is larger than the sum of its proper divisors (50807927836).

55115323544 is a wasteful number, since it uses less digits than its factorization.

55115323544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098491 (or 4098446 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

Adding to 55115323544 its reverse (44532351155), we get a palindrome (99647674699).

The spelling of 55115323544 in words is "fifty-five billion, one hundred fifteen million, three hundred twenty-three thousand, five hundred forty-four".