51686850200 has 24 divisors (see below), whose sum is σ = 120171927180. Its totient is φ = 20674740000.

The previous prime is 51686850197. The next prime is 51686850221. The reversal of 51686850200 is 205868615.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129216926 + ... + 129217325.

Almost surely, 2^51686850200 is an apocalyptic number.

51686850200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51686850200 is an abundant number, since it is smaller than the sum of its proper divisors (68485076980).

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

51686850200 is a wasteful number, since it uses less digits than its factorization.

51686850200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258434267 (or 258434258 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 51686850200 in words is "fifty-one billion, six hundred eighty-six million, eight hundred fifty thousand, two hundred".