55056166381943 has 2 divisors, whose sum is σ = 55056166381944. Its totient is φ = 55056166381942.

The previous prime is 55056166381897. The next prime is 55056166381961. The reversal of 55056166381943 is 34918366165055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55056166381943 - 2⁸ = 55056166381687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55056166381043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27528083190971 + 27528083190972.

It is an arithmetic number, because the mean of its divisors is an integer number (27528083190972).

Almost surely, 2^{55056166381943} is an apocalyptic number.

55056166381943 is a deficient number, since it is larger than the sum of its proper divisors (1).

55056166381943 is an equidigital number, since it uses as much as digits as its factorization.

55056166381943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984000, while the sum is 62.

The spelling of 55056166381943 in words is "fifty-five trillion, fifty-six billion, one hundred sixty-six million, three hundred eighty-one thousand, nine hundred forty-three".