55136215544 has 16 divisors (see below), whose sum is σ = 103382917920. Its totient is φ = 27567437440.

The previous prime is 55136215523. The next prime is 55136215559. The reversal of 55136215544 is 44551263155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531872 + ... + 627024.

It is an arithmetic number, because the mean of its divisors is an integer number (6461432370).

Almost surely, 2^55136215544 is an apocalyptic number.

It is an amenable number.

55136215544 is a deficient number, since it is larger than the sum of its proper divisors (48246702376).

55136215544 is a wasteful number, since it uses less digits than its factorization.

55136215544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167590 (or 167586 counting only the distinct ones).

The product of its digits is 360000, while the sum is 41.

Adding to 55136215544 its reverse (44551263155), we get a palindrome (99687478699).

The spelling of 55136215544 in words is "fifty-five billion, one hundred thirty-six million, two hundred fifteen thousand, five hundred forty-four".