51704566676137 has 4 divisors (see below), whose sum is σ = 51715500190420. Its totient is φ = 51693633161856.

The previous prime is 51704566676123. The next prime is 51704566676171. The reversal of 51704566676137 is 73167666540715.

It is a happy number.

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 270841139776 + 51433725536361 = 520424^2 + 7171731^2 .

It is a cyclic number.

It is not a de Polignac number, because 51704566676137 - 2²⁷ = 51704432458409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51704566676537) 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, 5466750048 + ... + 5466759505.

It is an arithmetic number, because the mean of its divisors is an integer number (12928875047605).

Almost surely, 2^{51704566676137} is an apocalyptic number.

It is an amenable number.

51704566676137 is a deficient number, since it is larger than the sum of its proper divisors (10933514283).

51704566676137 is a wasteful number, since it uses less digits than its factorization.

51704566676137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10933514282.

The product of its (nonzero) digits is 133358400, while the sum is 64.

The spelling of 51704566676137 in words is "fifty-one trillion, seven hundred four billion, five hundred sixty-six million, six hundred seventy-six thousand, one hundred thirty-seven".