12720352536837 has 16 divisors (see below), whose sum is σ = 20558145514560. Its totient is φ = 7709304567600.

The previous prime is 12720352536833. The next prime is 12720352536841. The reversal of 12720352536837 is 73863525302721.

12720352536837 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 0 + 3 + 525 + 36 + 83 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (12720352536833) and next prime (12720352536841).

It is not a de Polignac number, because 12720352536837 - 2² = 12720352536833 is a prime.

It is a super-2 number, since 2×12720352536837² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12720352536833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21414734614 + ... + 21414735207.

It is an arithmetic number, because the mean of its divisors is an integer number (1284884094660).

Almost surely, 2^{12720352536837} is an apocalyptic number.

It is an amenable number.

12720352536837 is a deficient number, since it is larger than the sum of its proper divisors (7837792977723).

12720352536837 is a wasteful number, since it uses less digits than its factorization.

12720352536837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42829469841 (or 42829469835 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 54.

The spelling of 12720352536837 in words is "twelve trillion, seven hundred twenty billion, three hundred fifty-two million, five hundred thirty-six thousand, eight hundred thirty-seven".