12537800343477 has 12 divisors (see below), whose sum is σ = 18110227131724. Its totient is φ = 8358500756160.

The previous prime is 12537800343461. The next prime is 12537800343479. The reversal of 12537800343477 is 77434300873521.

12537800343477 is a `hidden beast` number, since 1 + 2 + 53 + 7 + 80 + 0 + 3 + 43 + 477 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6599216383236 + 5938583960241 = 2568894^2 + 2436921^2 .

It is not a de Polignac number, because 12537800343477 - 2⁴ = 12537800343461 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 (12537800343479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188674 + ... + 5011107.

Almost surely, 2^{12537800343477} is an apocalyptic number.

It is an amenable number.

12537800343477 is a deficient number, since it is larger than the sum of its proper divisors (5572426788247).

12537800343477 is a wasteful number, since it uses less digits than its factorization.

12537800343477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467700 (or 5467697 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 54.

The spelling of 12537800343477 in words is "twelve trillion, five hundred thirty-seven billion, eight hundred million, three hundred forty-three thousand, four hundred seventy-seven".