51061566010665 has 16 divisors (see below), whose sum is σ = 93369720705408. Its totient is φ = 23342430176256.

The previous prime is 51061566010633. The next prime is 51061566010691. The reversal of 51061566010665 is 56601066516015.

It is not a de Polignac number, because 51061566010665 - 2⁵ = 51061566010633 is a prime.

It is a super-2 number, since 2×51061566010665² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243150314232 + ... + 243150314441.

It is an arithmetic number, because the mean of its divisors is an integer number (5835607544088).

Almost surely, 2^{51061566010665} is an apocalyptic number.

It is an amenable number.

51061566010665 is a deficient number, since it is larger than the sum of its proper divisors (42308154694743).

51061566010665 is a wasteful number, since it uses less digits than its factorization.

51061566010665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486300628688.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 51061566010665 in words is "fifty-one trillion, sixty-one billion, five hundred sixty-six million, ten thousand, six hundred sixty-five".