1131012515555 has 8 divisors (see below), whose sum is σ = 1461616174032. Its totient is φ = 835209242208.

The previous prime is 1131012515543. The next prime is 1131012515587. The reversal of 1131012515555 is 5555152101311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131012515555 - 2⁴⁰ = 31500887779 is a prime.

It is a Duffinian 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, 8700096209 + ... + 8700096338.

It is an arithmetic number, because the mean of its divisors is an integer number (182702021754).

Almost surely, 2^{1131012515555} is an apocalyptic number.

1131012515555 is a deficient number, since it is larger than the sum of its proper divisors (330603658477).

1131012515555 is a wasteful number, since it uses less digits than its factorization.

1131012515555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17400192565.

The product of its (nonzero) digits is 18750, while the sum is 35.

Adding to 1131012515555 its reverse (5555152101311), we get a palindrome (6686164616866).

The spelling of 1131012515555 in words is "one trillion, one hundred thirty-one billion, twelve million, five hundred fifteen thousand, five hundred fifty-five".