12506245877 has 4 divisors (see below), whose sum is σ = 12517443276. Its totient is φ = 12495048480.

The previous prime is 12506245819. The next prime is 12506245907. The reversal of 12506245877 is 77854260521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 201668401 + 12304577476 = 14201^2 + 110926^2 .

It is a cyclic number.

It is not a de Polignac number, because 12506245877 - 2¹⁰ = 12506244853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506242877) 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, 5597024 + ... + 5599257.

It is an arithmetic number, because the mean of its divisors is an integer number (3129360819).

Almost surely, 2^12506245877 is an apocalyptic number.

It is an amenable number.

12506245877 is a deficient number, since it is larger than the sum of its proper divisors (11197399).

12506245877 is a wasteful number, since it uses less digits than its factorization.

12506245877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11197398.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 12506245877 in words is "twelve billion, five hundred six million, two hundred forty-five thousand, eight hundred seventy-seven".