11028611055557 has 2 divisors, whose sum is σ = 11028611055558. Its totient is φ = 11028611055556.

The previous prime is 11028611055551. The next prime is 11028611055629. The reversal of 11028611055557 is 75555011682011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8133624506401 + 2894986549156 = 2851951^2 + 1701466^2 .

It is a cyclic number.

It is not a de Polignac number, because 11028611055557 - 2²² = 11028606861253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11028611055551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5514305527778 + 5514305527779.

It is an arithmetic number, because the mean of its divisors is an integer number (5514305527779).

Almost surely, 2^{11028611055557} is an apocalyptic number.

It is an amenable number.

11028611055557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11028611055557 is an equidigital number, since it uses as much as digits as its factorization.

11028611055557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420000, while the sum is 47.

The spelling of 11028611055557 in words is "eleven trillion, twenty-eight billion, six hundred eleven million, fifty-five thousand, five hundred fifty-seven".