55816055061855 has 48 divisors (see below), whose sum is σ = 98164157569632. Its totient is φ = 27061859123200.

The previous prime is 55816055061827. The next prime is 55816055061859.

55816055061855 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 55816055061855 - 2¹⁹ = 55816054537567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55816055061859) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118715035 + ... + 119184275.

It is an arithmetic number, because the mean of its divisors is an integer number (2045086616034).

Almost surely, 2^{55816055061855} is an apocalyptic number.

55816055061855 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55816055061855 is a deficient number, since it is larger than the sum of its proper divisors (42348102507777).

55816055061855 is a wasteful number, since it uses less digits than its factorization.

55816055061855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534808 (or 534797 counting only the distinct ones).

The product of its (nonzero) digits is 36000000, while the sum is 60.

The spelling of 55816055061855 in words is "fifty-five trillion, eight hundred sixteen billion, fifty-five million, sixty-one thousand, eight hundred fifty-five".