55185042885 has 24 divisors (see below), whose sum is σ = 102711754656. Its totient is φ = 25227447840.

The previous prime is 55185042859. The next prime is 55185042907. The reversal of 55185042885 is 58824058155.

It is a happy number.

It is not a de Polignac number, because 55185042885 - 2¹³ = 55185034693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37540111 + ... + 37541580.

It is an arithmetic number, because the mean of its divisors is an integer number (4279656444).

Almost surely, 2^55185042885 is an apocalyptic number.

It is an amenable number.

55185042885 is a deficient number, since it is larger than the sum of its proper divisors (47526711771).

55185042885 is a wasteful number, since it uses less digits than its factorization.

55185042885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75081713 (or 75081706 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 51.

The spelling of 55185042885 in words is "fifty-five billion, one hundred eighty-five million, forty-two thousand, eight hundred eighty-five".