55571543348819 has 2 divisors, whose sum is σ = 55571543348820. Its totient is φ = 55571543348818.

The previous prime is 55571543348813. The next prime is 55571543348887. The reversal of 55571543348819 is 91884334517555.

It is an a-pointer prime, because the next prime (55571543348887) can be obtained adding 55571543348819 to its sum of digits (68).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55571543348819 is a prime.

It is a super-2 number, since 2×55571543348819² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55571543348813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27785771674409 + 27785771674410.

It is an arithmetic number, because the mean of its divisors is an integer number (27785771674410).

Almost surely, 2^{55571543348819} is an apocalyptic number.

55571543348819 is a deficient number, since it is larger than the sum of its proper divisors (1).

55571543348819 is an equidigital number, since it uses as much as digits as its factorization.

55571543348819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880000, while the sum is 68.

The spelling of 55571543348819 in words is "fifty-five trillion, five hundred seventy-one billion, five hundred forty-three million, three hundred forty-eight thousand, eight hundred nineteen".