51543147647 has 8 divisors (see below), whose sum is σ = 51761448960. Its totient is φ = 51325283160.

The previous prime is 51543147631. The next prime is 51543147703. The reversal of 51543147647 is 74674134515.

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 51543147647 - 2⁴ = 51543147631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543147847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128372 + ... + 345782.

It is an arithmetic number, because the mean of its divisors is an integer number (6470181120).

Almost surely, 2^51543147647 is an apocalyptic number.

51543147647 is a deficient number, since it is larger than the sum of its proper divisors (218301313).

51543147647 is a wasteful number, since it uses less digits than its factorization.

51543147647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218413.

The product of its digits is 1411200, while the sum is 47.

The spelling of 51543147647 in words is "fifty-one billion, five hundred forty-three million, one hundred forty-seven thousand, six hundred forty-seven".