51280203705 has 16 divisors (see below), whose sum is σ = 83438976960. Its totient is φ = 26885891648.

The previous prime is 51280203703. The next prime is 51280203713. The reversal of 51280203705 is 50730208215.

It is a cyclic number.

It is not a de Polignac number, because 51280203705 - 2¹ = 51280203703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51280203703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28970982 + ... + 28972751.

It is an arithmetic number, because the mean of its divisors is an integer number (5214936060).

Almost surely, 2^51280203705 is an apocalyptic number.

It is an amenable number.

51280203705 is a deficient number, since it is larger than the sum of its proper divisors (32158773255).

51280203705 is a wasteful number, since it uses less digits than its factorization.

51280203705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57943800.

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 51280203705 in words is "fifty-one billion, two hundred eighty million, two hundred three thousand, seven hundred five".