51056101720 has 64 divisors (see below), whose sum is σ = 124453869120. Its totient is φ = 18738568704.

The previous prime is 51056101639. The next prime is 51056101721. The reversal of 51056101720 is 2710165015.

51056101720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51056101721) 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, 207127 + ... + 380806.

It is an arithmetic number, because the mean of its divisors is an integer number (1944591705).

Almost surely, 2^51056101720 is an apocalyptic number.

It is an amenable number.

51056101720 is an abundant number, since it is smaller than the sum of its proper divisors (73397767400).

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

51056101720 is a wasteful number, since it uses less digits than its factorization.

51056101720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588124 (or 588120 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

Adding to 51056101720 its reverse (2710165015), we get a palindrome (53766266735).

The spelling of 51056101720 in words is "fifty-one billion, fifty-six million, one hundred one thousand, seven hundred twenty".