12511333507 has 8 divisors (see below), whose sum is σ = 12723051600. Its totient is φ = 12300350304.

The previous prime is 12511333451. The next prime is 12511333511. The reversal of 12511333507 is 70533311521.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12511333507 is a prime.

It is a super-2 number, since 2×12511333507² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12511333547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149332 + ... + 217537.

It is an arithmetic number, because the mean of its divisors is an integer number (1590381450).

Almost surely, 2^12511333507 is an apocalyptic number.

12511333507 is a deficient number, since it is larger than the sum of its proper divisors (211718093).

12511333507 is an equidigital number, since it uses as much as digits as its factorization.

12511333507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367445.

The product of its (nonzero) digits is 9450, while the sum is 31.

The spelling of 12511333507 in words is "twelve billion, five hundred eleven million, three hundred thirty-three thousand, five hundred seven".