51615612245 has 32 divisors (see below), whose sum is σ = 66134880000. Its totient is φ = 38536907776.

The previous prime is 51615612221. The next prime is 51615612253. The reversal of 51615612245 is 54221651615.

It is not a de Polignac number, because 51615612245 - 2²⁰ = 51614563669 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51615612199 and 51615612208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8191106 + ... + 8197404.

It is an arithmetic number, because the mean of its divisors is an integer number (2066715000).

Almost surely, 2^51615612245 is an apocalyptic number.

It is an amenable number.

51615612245 is a deficient number, since it is larger than the sum of its proper divisors (14519267755).

51615612245 is a wasteful number, since it uses less digits than its factorization.

51615612245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its digits is 72000, while the sum is 38.

The spelling of 51615612245 in words is "fifty-one billion, six hundred fifteen million, six hundred twelve thousand, two hundred forty-five".