12528111719 has 8 divisors (see below), whose sum is σ = 13188531840. Its totient is φ = 11867796216.

The previous prime is 12528111709. The next prime is 12528111769. The reversal of 12528111719 is 91711182521.

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 12528111719 - 2¹² = 12528107623 is a prime.

It is a super-2 number, since 2×12528111719² (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 (12528111709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387782 + ... + 418844.

It is an arithmetic number, because the mean of its divisors is an integer number (1648566480).

Almost surely, 2^12528111719 is an apocalyptic number.

12528111719 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12528111719 is a deficient number, since it is larger than the sum of its proper divisors (660420121).

12528111719 is a wasteful number, since it uses less digits than its factorization.

12528111719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52309.

The product of its digits is 10080, while the sum is 38.

The spelling of 12528111719 in words is "twelve billion, five hundred twenty-eight million, one hundred eleven thousand, seven hundred nineteen".