51954220893 has 8 divisors (see below), whose sum is σ = 69428667168. Its totient is φ = 34557960944.

The previous prime is 51954220889. The next prime is 51954220909. The reversal of 51954220893 is 39802245915.

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 51954220893 - 2² = 51954220889 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51954220823) 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, 19545030 + ... + 19547687.

It is an arithmetic number, because the mean of its divisors is an integer number (8678583396).

Almost surely, 2^51954220893 is an apocalyptic number.

It is an amenable number.

51954220893 is a deficient number, since it is larger than the sum of its proper divisors (17474446275).

51954220893 is a wasteful number, since it uses less digits than its factorization.

51954220893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39093163.

The product of its (nonzero) digits is 777600, while the sum is 48.

The spelling of 51954220893 in words is "fifty-one billion, nine hundred fifty-four million, two hundred twenty thousand, eight hundred ninety-three".