51669370240 has 256 divisors, whose sum is σ = 133369830720. Its totient is φ = 19072548864.

The previous prime is 51669370237. The next prime is 51669370283. The reversal of 51669370240 is 4207396615.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182577139 + ... + 182577421.

Almost surely, 2^51669370240 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 51669370240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66684915360).

51669370240 is an abundant number, since it is smaller than the sum of its proper divisors (81700460480).

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

51669370240 is a wasteful number, since it uses less digits than its factorization.

51669370240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 51669370240 in words is "fifty-one billion, six hundred sixty-nine million, three hundred seventy thousand, two hundred forty".