11156034778 has 8 divisors (see below), whose sum is σ = 19124631072. Its totient is φ = 4781157756.

The previous prime is 11156034719. The next prime is 11156034779. The reversal of 11156034778 is 87743065111.

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

It is a super-2 number, since 2×11156034778² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11156034779) 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, 398429800 + ... + 398429827.

It is an arithmetic number, because the mean of its divisors is an integer number (2390578884).

Almost surely, 2^11156034778 is an apocalyptic number.

11156034778 is a deficient number, since it is larger than the sum of its proper divisors (7968596294).

11156034778 is an equidigital number, since it uses as much as digits as its factorization.

11156034778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796859636.

The product of its (nonzero) digits is 141120, while the sum is 43.

Adding to 11156034778 its reverse (87743065111), we get a palindrome (98899099889).

The spelling of 11156034778 in words is "eleven billion, one hundred fifty-six million, thirty-four thousand, seven hundred seventy-eight".