55144023777 has 48 divisors (see below), whose sum is σ = 86102208192. Its totient is φ = 35234844480.

The previous prime is 55144023763. The next prime is 55144023791. The reversal of 55144023777 is 77732044155.

55144023777 is a `hidden beast` number, since 5 + 514 + 40 + 23 + 7 + 77 = 666.

It is an interprime number because it is at equal distance from previous prime (55144023763) and next prime (55144023791).

It is not a de Polignac number, because 55144023777 - 2¹² = 55144019681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55144023707) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 556627 + ... + 648167.

It is an arithmetic number, because the mean of its divisors is an integer number (1793796004).

Almost surely, 2^55144023777 is an apocalyptic number.

It is an amenable number.

55144023777 is a deficient number, since it is larger than the sum of its proper divisors (30958184415).

55144023777 is an equidigital number, since it uses as much as digits as its factorization.

55144023777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91660 (or 91648 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 55144023777 in words is "fifty-five billion, one hundred forty-four million, twenty-three thousand, seven hundred seventy-seven".