12526401512 has 16 divisors (see below), whose sum is σ = 23488766340. Its totient is φ = 6262730496.

The previous prime is 12526401469. The next prime is 12526401523. The reversal of 12526401512 is 21510462521.

It can be written as a sum of positive squares in 2 ways, for example, as 12328549156 + 197852356 = 111034^2 + 14066^2 .

It is a super-2 number, since 2×12526401512² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 71378 + ... + 173630.

Almost surely, 2^12526401512 is an apocalyptic number.

It is an amenable number.

12526401512 is a deficient number, since it is larger than the sum of its proper divisors (10962364828).

12526401512 is a wasteful number, since it uses less digits than its factorization.

12526401512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117572 (or 117568 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 12526401512 in words is "twelve billion, five hundred twenty-six million, four hundred one thousand, five hundred twelve".