51950329561 has 8 divisors (see below), whose sum is σ = 56036899520. Its totient is φ = 47876672592.

The previous prime is 51950329489. The next prime is 51950329577. The reversal of 51950329561 is 16592305915.

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 51950329561 - 2⁹ = 51950329049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51950329591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3219885 + ... + 3235978.

It is an arithmetic number, because the mean of its divisors is an integer number (7004612440).

Almost surely, 2^51950329561 is an apocalyptic number.

It is an amenable number.

51950329561 is a deficient number, since it is larger than the sum of its proper divisors (4086569959).

51950329561 is a wasteful number, since it uses less digits than its factorization.

51950329561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6456495.

The product of its (nonzero) digits is 364500, while the sum is 46.

The spelling of 51950329561 in words is "fifty-one billion, nine hundred fifty million, three hundred twenty-nine thousand, five hundred sixty-one".