11400311278 has 16 divisors (see below), whose sum is σ = 17694308880. Its totient is φ = 5502301056.

The previous prime is 11400311257. The next prime is 11400311297. The reversal of 11400311278 is 87211300411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253126 + ... + 294742.

It is an arithmetic number, because the mean of its divisors is an integer number (1105894305).

Almost surely, 2^11400311278 is an apocalyptic number.

11400311278 is a deficient number, since it is larger than the sum of its proper divisors (6293997602).

11400311278 is a wasteful number, since it uses less digits than its factorization.

11400311278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46371.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 11400311278 its reverse (87211300411), we get a palindrome (98611611689).

The spelling of 11400311278 in words is "eleven billion, four hundred million, three hundred eleven thousand, two hundred seventy-eight".