51665505777226 has 16 divisors (see below), whose sum is σ = 84543665251968. Its totient is φ = 23484290156800.

The previous prime is 51665505777191. The next prime is 51665505777253. The reversal of 51665505777226 is 62277750556615.

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, 32570991 + ... + 34120381.

It is an arithmetic number, because the mean of its divisors is an integer number (5283979078248).

Almost surely, 2^{51665505777226} is an apocalyptic number.

51665505777226 is a deficient number, since it is larger than the sum of its proper divisors (32878159474742).

51665505777226 is a wasteful number, since it uses less digits than its factorization.

51665505777226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065117.

The product of its (nonzero) digits is 185220000, while the sum is 64.

The spelling of 51665505777226 in words is "fifty-one trillion, six hundred sixty-five billion, five hundred five million, seven hundred seventy-seven thousand, two hundred twenty-six".