55056166381847 has 2 divisors, whose sum is σ = 55056166381848. Its totient is φ = 55056166381846.

The previous prime is 55056166381823. The next prime is 55056166381897. The reversal of 55056166381847 is 74818366165055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55056166381847 - 2²⁰ = 55056165333271 is a prime.

It is a super-2 number, since 2×55056166381847² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55056166381897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528083190923 + 27528083190924.

It is an arithmetic number, because the mean of its divisors is an integer number (27528083190924).

Almost surely, 2^{55056166381847} is an apocalyptic number.

55056166381847 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056166381847 is an equidigital number, since it uses as much as digits as its factorization.

55056166381847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152000, while the sum is 65.

The spelling of 55056166381847 in words is "fifty-five trillion, fifty-six billion, one hundred sixty-six million, three hundred eighty-one thousand, eight hundred forty-seven".