55005555611 has 2 divisors, whose sum is σ = 55005555612. Its totient is φ = 55005555610.

The previous prime is 55005555491. The next prime is 55005555629. The reversal of 55005555611 is 11655550055.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55005555611 - 2¹⁴ = 55005539227 is a prime.

It is a super-2 number, since 2×55005555611² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55005552611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502777805 + 27502777806.

It is an arithmetic number, because the mean of its divisors is an integer number (27502777806).

Almost surely, 2^55005555611 is an apocalyptic number.

55005555611 is a deficient number, since it is larger than the sum of its proper divisors (1).

55005555611 is an equidigital number, since it uses as much as digits as its factorization.

55005555611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 55005555611 in words is "fifty-five billion, five million, five hundred fifty-five thousand, six hundred eleven".