51051311205 has 8 divisors (see below), whose sum is σ = 81682097952. Its totient is φ = 27227365968.

The previous prime is 51051311167. The next prime is 51051311209. The reversal of 51051311205 is 50211315015.

51051311205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51051311205 - 2⁹ = 51051310693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51051311209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1701710359 + ... + 1701710388.

It is an arithmetic number, because the mean of its divisors is an integer number (10210262244).

Almost surely, 2^51051311205 is an apocalyptic number.

It is an amenable number.

51051311205 is a deficient number, since it is larger than the sum of its proper divisors (30630786747).

51051311205 is a wasteful number, since it uses less digits than its factorization.

51051311205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403420755.

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 51051311205 in words is "fifty-one billion, fifty-one million, three hundred eleven thousand, two hundred five".