11540081378 has 16 divisors (see below), whose sum is σ = 19811977920. Its totient is φ = 4938503856.

The previous prime is 11540081353. The next prime is 11540081383. The reversal of 11540081378 is 87318004511.

It is a happy number.

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, 593873 + ... + 612996.

It is an arithmetic number, because the mean of its divisors is an integer number (1238248620).

Almost surely, 2^11540081378 is an apocalyptic number.

11540081378 is a deficient number, since it is larger than the sum of its proper divisors (8271896542).

11540081378 is a wasteful number, since it uses less digits than its factorization.

11540081378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207561.

The product of its (nonzero) digits is 26880, while the sum is 38.

Adding to 11540081378 its reverse (87318004511), we get a palindrome (98858085889).

The spelling of 11540081378 in words is "eleven billion, five hundred forty million, eighty-one thousand, three hundred seventy-eight".