51106667845321 has 16 divisors (see below), whose sum is σ = 55808078526720. Its totient is φ = 46414484887680.

The previous prime is 51106667845301. The next prime is 51106667845327. The reversal of 51106667845321 is 12354876660115.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51106667845321 is a prime.

It is a super-2 number, since 2×51106667845321² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51106667845327) 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, 652522455 + ... + 652600771.

It is an arithmetic number, because the mean of its divisors is an integer number (3488004907920).

Almost surely, 2^{51106667845321} is an apocalyptic number.

It is an amenable number.

51106667845321 is a deficient number, since it is larger than the sum of its proper divisors (4701410681399).

51106667845321 is a wasteful number, since it uses less digits than its factorization.

51106667845321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136464.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 51106667845321 in words is "fifty-one trillion, one hundred six billion, six hundred sixty-seven million, eight hundred forty-five thousand, three hundred twenty-one".