51530543345 has 8 divisors (see below), whose sum is σ = 61841120064. Its totient is φ = 41221455984.

The previous prime is 51530543303. The next prime is 51530543369. The reversal of 51530543345 is 54334503515.

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

It is a cyclic number.

It is not a de Polignac number, because 51530543345 - 2²⁰ = 51529494769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51530543299 and 51530543308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294749 + ... + 435818.

It is an arithmetic number, because the mean of its divisors is an integer number (7730140008).

Almost surely, 2^51530543345 is an apocalyptic number.

It is an amenable number.

51530543345 is a deficient number, since it is larger than the sum of its proper divisors (10310576719).

51530543345 is a wasteful number, since it uses less digits than its factorization.

51530543345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744679.

The product of its (nonzero) digits is 270000, while the sum is 38.

The spelling of 51530543345 in words is "fifty-one billion, five hundred thirty million, five hundred forty-three thousand, three hundred forty-five".