51655061605 has 8 divisors (see below), whose sum is σ = 70841227392. Its totient is φ = 35420613648.

The previous prime is 51655061597. The next prime is 51655061617. The reversal of 51655061605 is 50616055615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51655061605 - 2³ = 51655061597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 737929417 + ... + 737929486.

It is an arithmetic number, because the mean of its divisors is an integer number (8855153424).

Almost surely, 2^51655061605 is an apocalyptic number.

It is an amenable number.

51655061605 is a deficient number, since it is larger than the sum of its proper divisors (19186165787).

51655061605 is a wasteful number, since it uses less digits than its factorization.

51655061605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475858915.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 51655061605 in words is "fifty-one billion, six hundred fifty-five million, sixty-one thousand, six hundred five".