11028611055561 has 16 divisors (see below), whose sum is σ = 16041691420608. Its totient is φ = 6683975308800.

The previous prime is 11028611055557. The next prime is 11028611055629. The reversal of 11028611055561 is 16555011682011.

It is not a de Polignac number, because 11028611055561 - 2² = 11028611055557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11028611055551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7725585 + ... + 9041121.

It is an arithmetic number, because the mean of its divisors is an integer number (1002605713788).

Almost surely, 2^{11028611055561} is an apocalyptic number.

11028611055561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11028611055561 is a deficient number, since it is larger than the sum of its proper divisors (5013080365047).

11028611055561 is a wasteful number, since it uses less digits than its factorization.

11028611055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569592.

The product of its (nonzero) digits is 72000, while the sum is 42.

The spelling of 11028611055561 in words is "eleven trillion, twenty-eight billion, six hundred eleven million, fifty-five thousand, five hundred sixty-one".