51699650529280 has 384 divisors, whose sum is σ = 136992883154400. Its totient is φ = 18603992678400.

The previous prime is 51699650529251. The next prime is 51699650529283. The reversal of 51699650529280 is 8292505699615.

It can be written as a sum of positive squares in 16 ways, for example, as 1441305895936 + 50258344633344 = 1200544^2 + 7089312^2 .

It is a super-3 number, since 3×51699650529280³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51699650529283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5834512050 + ... + 5834520910.

Almost surely, 2^{51699650529280} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51699650529280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68496441577200).

51699650529280 is an abundant number, since it is smaller than the sum of its proper divisors (85293232625120).

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

51699650529280 is a wasteful number, since it uses less digits than its factorization.

51699650529280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011 (or 9991 counting only the distinct ones).

The product of its (nonzero) digits is 104976000, while the sum is 67.

The spelling of 51699650529280 in words is "fifty-one trillion, six hundred ninety-nine billion, six hundred fifty million, five hundred twenty-nine thousand, two hundred eighty".