51576204988 has 216 divisors, whose sum is σ = 120887475072. Its totient is φ = 19180022400.

The previous prime is 51576204943. The next prime is 51576205013. The reversal of 51576204988 is 88940267515.

It is a happy number.

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 71 ways as a sum of consecutive naturals, for example, 706523320 + ... + 706523392.

Almost surely, 2^51576204988 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 51576204988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60443737536).

51576204988 is an abundant number, since it is smaller than the sum of its proper divisors (69311270084).

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

51576204988 is a wasteful number, since it uses less digits than its factorization.

51576204988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 51576204988 in words is "fifty-one billion, five hundred seventy-six million, two hundred four thousand, nine hundred eighty-eight".