11478151515 has 16 divisors (see below), whose sum is σ = 18812971296. Its totient is φ = 5972371200.

The previous prime is 11478151493. The next prime is 11478151537. The reversal of 11478151515 is 51515187411.

11478151515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11478151493) and next prime (11478151537).

It is not a de Polignac number, because 11478151515 - 2⁷ = 11478151387 is a prime.

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, 9331216 + ... + 9332445.

It is an arithmetic number, because the mean of its divisors is an integer number (1175810706).

Almost surely, 2^11478151515 is an apocalyptic number.

11478151515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11478151515 is a deficient number, since it is larger than the sum of its proper divisors (7334819781).

11478151515 is a wasteful number, since it uses less digits than its factorization.

11478151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18663710.

The product of its digits is 28000, while the sum is 39.

The spelling of 11478151515 in words is "eleven billion, four hundred seventy-eight million, one hundred fifty-one thousand, five hundred fifteen".