51505616005 has 8 divisors (see below), whose sum is σ = 65059725600. Its totient is φ = 39035835216.

The previous prime is 51505615991. The next prime is 51505616027. The reversal of 51505616005 is 50061650515.

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 51505616005 - 2⁷ = 51505615877 is a prime.

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, 271082095 + ... + 271082284.

It is an arithmetic number, because the mean of its divisors is an integer number (8132465700).

Almost surely, 2^51505616005 is an apocalyptic number.

It is an amenable number.

51505616005 is a deficient number, since it is larger than the sum of its proper divisors (13554109595).

51505616005 is a wasteful number, since it uses less digits than its factorization.

51505616005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542164403.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 51505616005 in words is "fifty-one billion, five hundred five million, six hundred sixteen thousand, five".