55137899042 has 18 divisors (see below), whose sum is σ = 87867136497. Its totient is φ = 25944589984.

The previous prime is 55137899041. The next prime is 55137899099. The reversal of 55137899042 is 24099873155.

It can be written as a sum of positive squares in 2 ways, for example, as 50463578881 + 4674320161 = 224641^2 + 68369^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166039.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55137899041) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 5640443 + ... + 5650209.

Almost surely, 2^55137899042 is an apocalyptic number.

55137899042 is a deficient number, since it is larger than the sum of its proper divisors (32729237455).

55137899042 is an frugal number, since it uses more digits than its factorization.

55137899042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19570 (or 9786 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 55137899042 in words is "fifty-five billion, one hundred thirty-seven million, eight hundred ninety-nine thousand, forty-two".