51616113227 has 4 divisors (see below), whose sum is σ = 58989843696. Its totient is φ = 44242382760.

The previous prime is 51616113209. The next prime is 51616113229. The reversal of 51616113227 is 72231161615.

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 51616113227 - 2⁶ = 51616113163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51616113229) 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, 3686865224 + ... + 3686865237.

It is an arithmetic number, because the mean of its divisors is an integer number (14747460924).

Almost surely, 2^51616113227 is an apocalyptic number.

51616113227 is a deficient number, since it is larger than the sum of its proper divisors (7373730469).

51616113227 is an equidigital number, since it uses as much as digits as its factorization.

51616113227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373730468.

The product of its digits is 15120, while the sum is 35.

The spelling of 51616113227 in words is "fifty-one billion, six hundred sixteen million, one hundred thirteen thousand, two hundred twenty-seven".