12551146707509 has 8 divisors (see below), whose sum is σ = 12578021352960. Its totient is φ = 12524292449136.

The previous prime is 12551146707497. The next prime is 12551146707527. The reversal of 12551146707509 is 90570764115521.

It is a happy number.

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 12551146707509 - 2¹² = 12551146703413 is a prime.

It is a super-2 number, since 2×12551146707509² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551146703509) 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, 3863849 + ... + 6327054.

It is an arithmetic number, because the mean of its divisors is an integer number (1572252669120).

Almost surely, 2^{12551146707509} is an apocalyptic number.

It is an amenable number.

12551146707509 is a deficient number, since it is larger than the sum of its proper divisors (26874645451).

12551146707509 is a wasteful number, since it uses less digits than its factorization.

12551146707509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193539.

The product of its (nonzero) digits is 2646000, while the sum is 53.

The spelling of 12551146707509 in words is "twelve trillion, five hundred fifty-one billion, one hundred forty-six million, seven hundred seven thousand, five hundred nine".