11455142131215 has 12 divisors (see below), whose sum is σ = 19855579694184. Its totient is φ = 6109409136624.

The previous prime is 11455142131163. The next prime is 11455142131247. The reversal of 11455142131215 is 51213124155411.

It is a happy number.

11455142131215 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 514 + 2 + 13 + 121 + 5 = 666.

It is not a de Polignac number, because 11455142131215 - 2¹⁰ = 11455142130191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11455142131215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127279356969 + ... + 127279357058.

It is an arithmetic number, because the mean of its divisors is an integer number (1654631641182).

Almost surely, 2^{11455142131215} is an apocalyptic number.

11455142131215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11455142131215 is a deficient number, since it is larger than the sum of its proper divisors (8400437562969).

11455142131215 is a wasteful number, since it uses less digits than its factorization.

11455142131215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254558714038 (or 254558714035 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

Adding to 11455142131215 its reverse (51213124155411), we get a palindrome (62668266286626).

The spelling of 11455142131215 in words is "eleven trillion, four hundred fifty-five billion, one hundred forty-two million, one hundred thirty-one thousand, two hundred fifteen".