12581526662107 has 4 divisors (see below), whose sum is σ = 13549336405360. Its totient is φ = 11613716918856.

The previous prime is 12581526662071. The next prime is 12581526662113. The reversal of 12581526662107 is 70126662518521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12581526662107 - 2¹⁵ = 12581526629339 is a prime.

It is a super-5 number, since 5×12581526662107⁵ (a number of 67 digits) contains 55555 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12581526662137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483904871607 + ... + 483904871632.

It is an arithmetic number, because the mean of its divisors is an integer number (3387334101340).

Almost surely, 2^{12581526662107} is an apocalyptic number.

12581526662107 is a deficient number, since it is larger than the sum of its proper divisors (967809743253).

12581526662107 is an equidigital number, since it uses as much as digits as its factorization.

12581526662107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967809743252.

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 12581526662107 in words is "twelve trillion, five hundred eighty-one billion, five hundred twenty-six million, six hundred sixty-two thousand, one hundred seven".