51429433200 has 120 divisors (see below), whose sum is σ = 166597038000. Its totient is φ = 13560391680.

The previous prime is 51429433189. The next prime is 51429433201. The reversal of 51429433200 is 233492415.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429433201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133975 + ... + 347574.

It is an arithmetic number, because the mean of its divisors is an integer number (1388308650).

Almost surely, 2^51429433200 is an apocalyptic number.

51429433200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51429433200 is an abundant number, since it is smaller than the sum of its proper divisors (115167604800).

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

51429433200 is a wasteful number, since it uses less digits than its factorization.

51429433200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481659 (or 481648 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 51429433200 in words is "fifty-one billion, four hundred twenty-nine million, four hundred thirty-three thousand, two hundred".