51616526312 has 16 divisors (see below), whose sum is σ = 104225678340. Its totient is φ = 23823012096.

The previous prime is 51616526309. The next prime is 51616526323. The reversal of 51616526312 is 21362561615.

It can be written as a sum of positive squares in 2 ways, for example, as 50505370756 + 1111155556 = 224734^2 + 33334^2 .

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 3 ways as a sum of consecutive naturals, for example, 248156273 + ... + 248156480.

Almost surely, 2^51616526312 is an apocalyptic number.

51616526312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51616526312 is an abundant number, since it is smaller than the sum of its proper divisors (52609152028).

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

51616526312 is a wasteful number, since it uses less digits than its factorization.

51616526312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496312772 (or 496312768 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The spelling of 51616526312 in words is "fifty-one billion, six hundred sixteen million, five hundred twenty-six thousand, three hundred twelve".