12511350520 has 64 divisors (see below), whose sum is σ = 29798604000. Its totient is φ = 4719579648.

The previous prime is 12511350497. The next prime is 12511350547. The reversal of 12511350520 is 2505311521.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75535 + ... + 175294.

Almost surely, 2^12511350520 is an apocalyptic number.

12511350520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12511350520 is an abundant number, since it is smaller than the sum of its proper divisors (17287253480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12511350520 is a wasteful number, since it uses less digits than its factorization.

12511350520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250912 (or 250908 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The spelling of 12511350520 in words is "twelve billion, five hundred eleven million, three hundred fifty thousand, five hundred twenty".