51429728133 has 96 divisors (see below), whose sum is σ = 87958241280. Its totient is φ = 28348427520.

The previous prime is 51429728123. The next prime is 51429728153. The reversal of 51429728133 is 33182792415.

It is a happy number.

51429728133 is a `hidden beast` number, since 51 + 4 + 297 + 281 + 33 = 666.

It is not a de Polignac number, because 51429728133 - 2⁵ = 51429728101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51429728123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 140135316 + ... + 140135682.

It is an arithmetic number, because the mean of its divisors is an integer number (916231680).

Almost surely, 2^51429728133 is an apocalyptic number.

It is an amenable number.

51429728133 is a deficient number, since it is larger than the sum of its proper divisors (36528513147).

51429728133 is a wasteful number, since it uses less digits than its factorization.

51429728133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 51429728133 in words is "fifty-one billion, four hundred twenty-nine million, seven hundred twenty-eight thousand, one hundred thirty-three".