55562773568387 has 2 divisors, whose sum is σ = 55562773568388. Its totient is φ = 55562773568386.

The previous prime is 55562773568359. The next prime is 55562773568413. The reversal of 55562773568387 is 78386537726555.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55562773568387 - 2²⁸ = 55562505132931 is a prime.

It is a super-2 number, since 2×55562773568387² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55562773508387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27781386784193 + 27781386784194.

It is an arithmetic number, because the mean of its divisors is an integer number (27781386784194).

Almost surely, 2^{55562773568387} is an apocalyptic number.

55562773568387 is a deficient number, since it is larger than the sum of its proper divisors (1).

55562773568387 is an equidigital number, since it uses as much as digits as its factorization.

55562773568387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8890560000, while the sum is 77.

The spelling of 55562773568387 in words is "fifty-five trillion, five hundred sixty-two billion, seven hundred seventy-three million, five hundred sixty-eight thousand, three hundred eighty-seven".