12507237907845 has 32 divisors (see below), whose sum is σ = 20905191770112. Its totient is φ = 6373310467392.

The previous prime is 12507237907811. The next prime is 12507237907847. The reversal of 12507237907845 is 54870973270521.

It is a happy number.

It is not a de Polignac number, because 12507237907845 - 2¹² = 12507237903749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507237907847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20129647 + ... + 20741676.

It is an arithmetic number, because the mean of its divisors is an integer number (653287242816).

Almost surely, 2^{12507237907845} is an apocalyptic number.

12507237907845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12507237907845 is a deficient number, since it is larger than the sum of its proper divisors (8397953862267).

12507237907845 is a wasteful number, since it uses less digits than its factorization.

12507237907845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40872241.

The product of its (nonzero) digits is 29635200, while the sum is 60.

The spelling of 12507237907845 in words is "twelve trillion, five hundred seven billion, two hundred thirty-seven million, nine hundred seven thousand, eight hundred forty-five".