12553515511 has 8 divisors (see below), whose sum is σ = 12915400784. Its totient is φ = 12192819840.

The previous prime is 12553515509. The next prime is 12553515521. The reversal of 12553515511 is 11551535521.

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 12553515511 - 2¹ = 12553515509 is a prime.

It is a super-2 number, since 2×12553515511² (a number of 21 digits) contains 22 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 (12553515521) 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 7 ways as a sum of consecutive naturals, for example, 275970 + ... + 318223.

It is an arithmetic number, because the mean of its divisors is an integer number (1614425098).

Almost surely, 2^12553515511 is an apocalyptic number.

12553515511 is a deficient number, since it is larger than the sum of its proper divisors (361885273).

12553515511 is an equidigital number, since it uses as much as digits as its factorization.

12553515511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594801.

The product of its digits is 18750, while the sum is 34.

The spelling of 12553515511 in words is "twelve billion, five hundred fifty-three million, five hundred fifteen thousand, five hundred eleven".