11386531478 has 32 divisors (see below), whose sum is σ = 20918974464. Its totient is φ = 4541609952.

The previous prime is 11386531427. The next prime is 11386531483. The reversal of 11386531478 is 87413568311.

11386531478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465950 + ... + 489777.

It is an arithmetic number, because the mean of its divisors is an integer number (653717952).

Almost surely, 2^11386531478 is an apocalyptic number.

11386531478 is a deficient number, since it is larger than the sum of its proper divisors (9532442986).

11386531478 is a wasteful number, since it uses less digits than its factorization.

11386531478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955796.

The product of its digits is 483840, while the sum is 47.

The spelling of 11386531478 in words is "eleven billion, three hundred eighty-six million, five hundred thirty-one thousand, four hundred seventy-eight".