11334556778 has 16 divisors (see below), whose sum is σ = 18052959240. Its totient is φ = 5318793216.

The previous prime is 11334556747. The next prime is 11334556787. The reversal of 11334556778 is 87765543311.

It can be written as a sum of positive squares in 4 ways, for example, as 9918765649 + 1415791129 = 99593^2 + 37627^2 .

It is a Curzon number.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460193 + ... + 484196.

Almost surely, 2^11334556778 is an apocalyptic number.

11334556778 is a deficient number, since it is larger than the sum of its proper divisors (6718402462).

11334556778 is a wasteful number, since it uses less digits than its factorization.

11334556778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944761.

The product of its digits is 2116800, while the sum is 50.

The spelling of 11334556778 in words is "eleven billion, three hundred thirty-four million, five hundred fifty-six thousand, seven hundred seventy-eight".