51969556547 has 8 divisors (see below), whose sum is σ = 52161144000. Its totient is φ = 51778025640.

The previous prime is 51969556543. The next prime is 51969556559. The reversal of 51969556547 is 74565596915.

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 51969556547 - 2² = 51969556543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51969556547.

It is not an unprimeable number, because it can be changed into a prime (51969556543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2962472 + ... + 2979962.

It is an arithmetic number, because the mean of its divisors is an integer number (6520143000).

Almost surely, 2^51969556547 is an apocalyptic number.

51969556547 is a deficient number, since it is larger than the sum of its proper divisors (191587453).

51969556547 is a wasteful number, since it uses less digits than its factorization.

51969556547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28273.

The product of its digits is 51030000, while the sum is 62.

The spelling of 51969556547 in words is "fifty-one billion, nine hundred sixty-nine million, five hundred fifty-six thousand, five hundred forty-seven".