51700020170 has 16 divisors (see below), whose sum is σ = 93739309128. Its totient is φ = 20529058560.

The previous prime is 51700020157. The next prime is 51700020181. The reversal of 51700020170 is 7102000715.

It is a happy number.

51700020170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 42358990969 + 9341029201 = 205813^2 + 96649^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18867251 + ... + 18869990.

Almost surely, 2^51700020170 is an apocalyptic number.

51700020170 is a deficient number, since it is larger than the sum of its proper divisors (42039288958).

51700020170 is a wasteful number, since it uses less digits than its factorization.

51700020170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37737385.

The product of its (nonzero) digits is 490, while the sum is 23.

Adding to 51700020170 its reverse (7102000715), we get a palindrome (58802020885).

The spelling of 51700020170 in words is "fifty-one billion, seven hundred million, twenty thousand, one hundred seventy".