51646472201 has 8 divisors (see below), whose sum is σ = 54379703520. Its totient is φ = 48914740512.

The previous prime is 51646472179. The next prime is 51646472203. The reversal of 51646472201 is 10227464615.

It is a happy number.

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 51646472201 - 2²⁶ = 51579363337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51646472203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303860 + ... + 442293.

It is an arithmetic number, because the mean of its divisors is an integer number (6797462940).

Almost surely, 2^51646472201 is an apocalyptic number.

It is an amenable number.

51646472201 is a deficient number, since it is larger than the sum of its proper divisors (2733231319).

51646472201 is a wasteful number, since it uses less digits than its factorization.

51646472201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749815.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 51646472201 in words is "fifty-one billion, six hundred forty-six million, four hundred seventy-two thousand, two hundred one".