51504717386 has 8 divisors (see below), whose sum is σ = 81801610020. Its totient is φ = 24237514048.

The previous prime is 51504717377. The next prime is 51504717391. The reversal of 51504717386 is 68371740515.

It can be written as a sum of positive squares in 2 ways, for example, as 50206916761 + 1297800625 = 224069^2 + 36025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51504717386.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757422281 + ... + 757422348.

Almost surely, 2^51504717386 is an apocalyptic number.

51504717386 is a deficient number, since it is larger than the sum of its proper divisors (30296892634).

51504717386 is a wasteful number, since it uses less digits than its factorization.

51504717386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514844648.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 51504717386 in words is "fifty-one billion, five hundred four million, seven hundred seventeen thousand, three hundred eighty-six".