11075779778 has 18 divisors (see below), whose sum is σ = 19327923603. Its totient is φ = 4746316260.

The previous prime is 11075779733. The next prime is 11075779787. The reversal of 11075779778 is 87797757011.

It can be written as a sum of positive squares in only one way, i.e., 5537889889 + 5537889889 = 74417^2 + 74417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74417.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1036523 + ... + 1047153.

Almost surely, 2^11075779778 is an apocalyptic number.

11075779778 is a deficient number, since it is larger than the sum of its proper divisors (8252143825).

11075779778 is an frugal number, since it uses more digits than its factorization.

11075779778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21278 (or 10640 counting only the distinct ones).

The product of its (nonzero) digits is 6050520, while the sum is 59.

The spelling of 11075779778 in words is "eleven billion, seventy-five million, seven hundred seventy-nine thousand, seven hundred seventy-eight".