55216464544259 has 2 divisors, whose sum is σ = 55216464544260. Its totient is φ = 55216464544258.

The previous prime is 55216464544237. The next prime is 55216464544369. The reversal of 55216464544259 is 95244546461255.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55216464544259 is a prime.

It is a super-2 number, since 2×55216464544259² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55216464544459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27608232272129 + 27608232272130.

It is an arithmetic number, because the mean of its divisors is an integer number (27608232272130).

Almost surely, 2^{55216464544259} is an apocalyptic number.

55216464544259 is a deficient number, since it is larger than the sum of its proper divisors (1).

55216464544259 is an equidigital number, since it uses as much as digits as its factorization.

55216464544259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360000, while the sum is 62.

The spelling of 55216464544259 in words is "fifty-five trillion, two hundred sixteen billion, four hundred sixty-four million, five hundred forty-four thousand, two hundred fifty-nine".