11156799061 has 4 divisors (see below), whose sum is σ = 11541516300. Its totient is φ = 10772081824.

The previous prime is 11156799029. The next prime is 11156799067. The reversal of 11156799061 is 16099765111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3374912836 + 7781886225 = 58094^2 + 88215^2 .

It is a cyclic number.

It is not a de Polignac number, because 11156799061 - 2⁵ = 11156799029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11156799067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192358576 + ... + 192358633.

It is an arithmetic number, because the mean of its divisors is an integer number (2885379075).

Almost surely, 2^11156799061 is an apocalyptic number.

It is an amenable number.

11156799061 is a deficient number, since it is larger than the sum of its proper divisors (384717239).

11156799061 is an equidigital number, since it uses as much as digits as its factorization.

11156799061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384717238.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 11156799061 in words is "eleven billion, one hundred fifty-six million, seven hundred ninety-nine thousand, sixty-one".