51710781670111 has 4 divisors (see below), whose sum is σ = 51782702090400. Its totient is φ = 51638861249824.

The previous prime is 51710781670091. The next prime is 51710781670127. The reversal of 51710781670111 is 11107618701715.

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 51710781670111 - 2³¹ = 51708634186463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51710781679111) 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, 35960209066 + ... + 35960210503.

It is an arithmetic number, because the mean of its divisors is an integer number (12945675522600).

Almost surely, 2^{51710781670111} is an apocalyptic number.

51710781670111 is a deficient number, since it is larger than the sum of its proper divisors (71920420289).

51710781670111 is an equidigital number, since it uses as much as digits as its factorization.

51710781670111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71920420288.

The product of its (nonzero) digits is 82320, while the sum is 46.

The spelling of 51710781670111 in words is "fifty-one trillion, seven hundred ten billion, seven hundred eighty-one million, six hundred seventy thousand, one hundred eleven".