51745930287 has 4 divisors (see below), whose sum is σ = 68994573720. Its totient is φ = 34497286856.

The previous prime is 51745930259. The next prime is 51745930307. The reversal of 51745930287 is 78203954715.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51745930287 - 2¹⁴ = 51745913903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51745930217) 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, 8624321712 + ... + 8624321717.

It is an arithmetic number, because the mean of its divisors is an integer number (17248643430).

Almost surely, 2^51745930287 is an apocalyptic number.

51745930287 is a deficient number, since it is larger than the sum of its proper divisors (17248643433).

51745930287 is a wasteful number, since it uses less digits than its factorization.

51745930287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17248643432.

The product of its (nonzero) digits is 2116800, while the sum is 51.

The spelling of 51745930287 in words is "fifty-one billion, seven hundred forty-five million, nine hundred thirty thousand, two hundred eighty-seven".