51776613252505 has 16 divisors (see below), whose sum is σ = 64842813671040. Its totient is φ = 39614565937408.

The previous prime is 51776613252503. The next prime is 51776613252523. The reversal of 51776613252505 is 50525231667715.

It is a cyclic number.

It is not a de Polignac number, because 51776613252505 - 2¹ = 51776613252503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51776613252503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32159575 + ... + 33731164.

It is an arithmetic number, because the mean of its divisors is an integer number (4052675854440).

Almost surely, 2^{51776613252505} is an apocalyptic number.

It is an amenable number.

51776613252505 is a deficient number, since it is larger than the sum of its proper divisors (13066200418535).

51776613252505 is a wasteful number, since it uses less digits than its factorization.

51776613252505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65897600.

The product of its (nonzero) digits is 13230000, while the sum is 55.

The spelling of 51776613252505 in words is "fifty-one trillion, seven hundred seventy-six billion, six hundred thirteen million, two hundred fifty-two thousand, five hundred five".