55056166381896 has 32 divisors (see below), whose sum is σ = 141360427199040. Its totient is φ = 17856053961408.

The previous prime is 55056166381847. The next prime is 55056166381897. The reversal of 55056166381896 is 69818366165055.

It is a self number, because there is not a number n which added to its sum of digits gives 55056166381896.

It is not an unprimeable number, because it can be changed into a prime (55056166381897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31000092796 + ... + 31000094571.

It is an arithmetic number, because the mean of its divisors is an integer number (4417513349970).

Almost surely, 2^{55056166381896} is an apocalyptic number.

It is an amenable number.

55056166381896 is an abundant number, since it is smaller than the sum of its proper divisors (86304260817144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55056166381896 is a wasteful number, since it uses less digits than its factorization.

55056166381896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62000187413 (or 62000187409 counting only the distinct ones).

The product of its (nonzero) digits is 279936000, while the sum is 69.

The spelling of 55056166381896 in words is "fifty-five trillion, fifty-six billion, one hundred sixty-six million, three hundred eighty-one thousand, eight hundred ninety-six".