51663354377 has 8 divisors (see below), whose sum is σ = 53944337664. Its totient is φ = 49385267008.

The previous prime is 51663354367. The next prime is 51663354427. The reversal of 51663354377 is 77345336615.

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 51663354377 - 2⁴ = 51663354361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51663354317) 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, 687473 + ... + 758910.

It is an arithmetic number, because the mean of its divisors is an integer number (6743042208).

Almost surely, 2^51663354377 is an apocalyptic number.

It is an amenable number.

51663354377 is a deficient number, since it is larger than the sum of its proper divisors (2280983287).

51663354377 is a wasteful number, since it uses less digits than its factorization.

51663354377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447959.

The product of its digits is 4762800, while the sum is 50.

The spelling of 51663354377 in words is "fifty-one billion, six hundred sixty-three million, three hundred fifty-four thousand, three hundred seventy-seven".