51040371605 has 8 divisors (see below), whose sum is σ = 61251144864. Its totient is φ = 40830498000.

The previous prime is 51040371589. The next prime is 51040371619. The reversal of 51040371605 is 50617304015.

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

It is not a de Polignac number, because 51040371605 - 2⁴ = 51040371589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 93071 + ... + 332780.

It is an arithmetic number, because the mean of its divisors is an integer number (7656393108).

Almost surely, 2^51040371605 is an apocalyptic number.

It is an amenable number.

51040371605 is a deficient number, since it is larger than the sum of its proper divisors (10210773259).

51040371605 is a wasteful number, since it uses less digits than its factorization.

51040371605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449827.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 51040371605 in words is "fifty-one billion, forty million, three hundred seventy-one thousand, six hundred five".