51555053118 has 64 divisors (see below), whose sum is σ = 106539971328. Its totient is φ = 16619328000.

The previous prime is 51555053113. The next prime is 51555053141. The reversal of 51555053118 is 81135055515.

51555053118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51555053113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52768246 + ... + 52769222.

It is an arithmetic number, because the mean of its divisors is an integer number (1664687052).

Almost surely, 2^51555053118 is an apocalyptic number.

51555053118 is an abundant number, since it is smaller than the sum of its proper divisors (54984918210).

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

51555053118 is a wasteful number, since it uses less digits than its factorization.

51555053118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217.

The product of its (nonzero) digits is 75000, while the sum is 39.

The spelling of 51555053118 in words is "fifty-one billion, five hundred fifty-five million, fifty-three thousand, one hundred eighteen".