51616600111211 has 4 divisors (see below), whose sum is σ = 51616621317624. Its totient is φ = 51616578904800.

The previous prime is 51616600111183. The next prime is 51616600111217. The reversal of 51616600111211 is 11211100661615.

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 51616600111211 - 2¹⁴ = 51616600094827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51616600111217) 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, 6395645 + ... + 12005726.

It is an arithmetic number, because the mean of its divisors is an integer number (12904155329406).

Almost surely, 2^{51616600111211} is an apocalyptic number.

51616600111211 is a deficient number, since it is larger than the sum of its proper divisors (21206413).

51616600111211 is a wasteful number, since it uses less digits than its factorization.

51616600111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21206412.

The product of its (nonzero) digits is 2160, while the sum is 32.

Adding to 51616600111211 its reverse (11211100661615), we get a palindrome (62827700772826).

The spelling of 51616600111211 in words is "fifty-one trillion, six hundred sixteen billion, six hundred million, one hundred eleven thousand, two hundred eleven".