51615612246 has 16 divisors (see below), whose sum is σ = 112615881408. Its totient is φ = 15641094600.

The previous prime is 51615612221. The next prime is 51615612253. The reversal of 51615612246 is 64221651615.

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 7 ways as a sum of consecutive naturals, for example, 391027300 + ... + 391027431.

It is an arithmetic number, because the mean of its divisors is an integer number (7038492588).

Almost surely, 2^51615612246 is an apocalyptic number.

51615612246 is an abundant number, since it is smaller than the sum of its proper divisors (61000269162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51615612246 is a wasteful number, since it uses less digits than its factorization.

51615612246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782054747.

The product of its digits is 86400, while the sum is 39.

The spelling of 51615612246 in words is "fifty-one billion, six hundred fifteen million, six hundred twelve thousand, two hundred forty-six".