51628148713 has 4 divisors (see below), whose sum is σ = 51646349700. Its totient is φ = 51609947728.

The previous prime is 51628148701. The next prime is 51628148717. The reversal of 51628148713 is 31784182615.

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 2205523369 + 49422625344 = 46963^2 + 222312^2 .

It is a cyclic number.

It is not a de Polignac number, because 51628148713 - 2²⁹ = 51091277801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51628148717) 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, 9096238 + ... + 9101911.

It is an arithmetic number, because the mean of its divisors is an integer number (12911587425).

Almost surely, 2^51628148713 is an apocalyptic number.

It is an amenable number.

51628148713 is a deficient number, since it is larger than the sum of its proper divisors (18200987).

51628148713 is a wasteful number, since it uses less digits than its factorization.

51628148713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18200986.

The product of its digits is 322560, while the sum is 46.

The spelling of 51628148713 in words is "fifty-one billion, six hundred twenty-eight million, one hundred forty-eight thousand, seven hundred thirteen".