11070565561 has 8 divisors (see below), whose sum is σ = 12085321248. Its totient is φ = 10057200000.

The previous prime is 11070565523. The next prime is 11070565579. The reversal of 11070565561 is 16556507011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11070565561 - 2⁷ = 11070565433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11070565561.

It is not an unprimeable number, because it can be changed into a prime (11070565511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330840 + ... + 362761.

It is an arithmetic number, because the mean of its divisors is an integer number (1510665156).

Almost surely, 2^11070565561 is an apocalyptic number.

11070565561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11070565561 is a deficient number, since it is larger than the sum of its proper divisors (1014755687).

11070565561 is a wasteful number, since it uses less digits than its factorization.

11070565561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695063.

The product of its (nonzero) digits is 31500, while the sum is 37.

The spelling of 11070565561 in words is "eleven billion, seventy million, five hundred sixty-five thousand, five hundred sixty-one".