55143242512 has 40 divisors (see below), whose sum is σ = 108233767040. Its totient is φ = 27212215680.

The previous prime is 55143242491. The next prime is 55143242521. The reversal of 55143242512 is 21524234155.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4105087 + ... + 4118497.

It is an arithmetic number, because the mean of its divisors is an integer number (2705844176).

Almost surely, 2^55143242512 is an apocalyptic number.

It is an amenable number.

55143242512 is a deficient number, since it is larger than the sum of its proper divisors (53090524528).

55143242512 is a wasteful number, since it uses less digits than its factorization.

55143242512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16751 (or 16745 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

Adding to 55143242512 its reverse (21524234155), we get a palindrome (76667476667).

The spelling of 55143242512 in words is "fifty-five billion, one hundred forty-three million, two hundred forty-two thousand, five hundred twelve".