55318501211877 has 24 divisors (see below), whose sum is σ = 84115713077760. Its totient is φ = 34935628406400.

The previous prime is 55318501211849. The next prime is 55318501211887. The reversal of 55318501211877 is 77811210581355.

55318501211877 is a `hidden beast` number, since 5 + 5 + 3 + 18 + 501 + 2 + 118 + 7 + 7 = 666.

It is not a de Polignac number, because 55318501211877 - 2¹⁶ = 55318501146341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55318501211887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8455749 + ... + 13495802.

It is an arithmetic number, because the mean of its divisors is an integer number (3504821378240).

Almost surely, 2^{55318501211877} is an apocalyptic number.

55318501211877 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

55318501211877 is a deficient number, since it is larger than the sum of its proper divisors (28797211865883).

55318501211877 is a wasteful number, since it uses less digits than its factorization.

55318501211877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21966313 (or 21966310 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 54.

The spelling of 55318501211877 in words is "fifty-five trillion, three hundred eighteen billion, five hundred one million, two hundred eleven thousand, eight hundred seventy-seven".