12315205546511 has 6 divisors (see below), whose sum is σ = 14325851350080. Its totient is φ = 10555890468396.

The previous prime is 12315205546493. The next prime is 12315205546517. The reversal of 12315205546511 is 11564550251321.

It is not a de Polignac number, because 12315205546511 - 2³⁰ = 12314131804687 is a prime.

It is a super-3 number, since 3×12315205546511³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12315205546517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 125665362671 + ... + 125665362768.

It is an arithmetic number, because the mean of its divisors is an integer number (2387641891680).

Almost surely, 2^{12315205546511} is an apocalyptic number.

12315205546511 is a deficient number, since it is larger than the sum of its proper divisors (2010645803569).

12315205546511 is an equidigital number, since it uses as much as digits as its factorization.

12315205546511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251330725453 (or 251330725446 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 41.

Adding to 12315205546511 its reverse (11564550251321), we get a palindrome (23879755797832).

The spelling of 12315205546511 in words is "twelve trillion, three hundred fifteen billion, two hundred five million, five hundred forty-six thousand, five hundred eleven".