11515204142143 has 32 divisors (see below), whose sum is σ = 12602328302592. Its totient is φ = 10457497612800.

The previous prime is 11515204142107. The next prime is 11515204142147. The reversal of 11515204142143 is 34124140251511.

It is a cyclic number.

It is not a de Polignac number, because 11515204142143 - 2¹⁷ = 11515204011071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11515204142099 and 11515204142108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11515204142147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1290503680 + ... + 1290512602.

It is an arithmetic number, because the mean of its divisors is an integer number (393822759456).

Almost surely, 2^{11515204142143} is an apocalyptic number.

11515204142143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11515204142143 is a deficient number, since it is larger than the sum of its proper divisors (1087124160449).

11515204142143 is a wasteful number, since it uses less digits than its factorization.

11515204142143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11815.

The product of its (nonzero) digits is 19200, while the sum is 34.

Adding to 11515204142143 its reverse (34124140251511), we get a palindrome (45639344393654).

The spelling of 11515204142143 in words is "eleven trillion, five hundred fifteen billion, two hundred four million, one hundred forty-two thousand, one hundred forty-three".