51106664065411 has 4 divisors (see below), whose sum is σ = 51112173039232. Its totient is φ = 51101155091592.

The previous prime is 51106664065399. The next prime is 51106664065489. The reversal of 51106664065411 is 11456046660115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51106664065411 - 2⁹ = 51106664064899 is a prime.

It is a super-2 number, since 2×51106664065411² (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 (51106664065111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754472995 + ... + 2754491548.

It is an arithmetic number, because the mean of its divisors is an integer number (12778043259808).

Almost surely, 2^{51106664065411} is an apocalyptic number.

51106664065411 is a deficient number, since it is larger than the sum of its proper divisors (5508973821).

51106664065411 is an equidigital number, since it uses as much as digits as its factorization.

51106664065411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5508973820.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 51106664065411 in words is "fifty-one trillion, one hundred six billion, six hundred sixty-four million, sixty-five thousand, four hundred eleven".