51407805235128 has 16 divisors (see below), whose sum is σ = 128519513087880. Its totient is φ = 17135935078368.

The previous prime is 51407805235109. The next prime is 51407805235159. The reversal of 51407805235128 is 82153250870415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070995942375 + ... + 1070995942422.

Almost surely, 2^{51407805235128} is an apocalyptic number.

It is an amenable number.

51407805235128 is an abundant number, since it is smaller than the sum of its proper divisors (77111707852752).

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

51407805235128 is a wasteful number, since it uses less digits than its factorization.

51407805235128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141991884806 (or 2141991884802 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 51.

The spelling of 51407805235128 in words is "fifty-one trillion, four hundred seven billion, eight hundred five million, two hundred thirty-five thousand, one hundred twenty-eight".