51011055180 has 48 divisors (see below), whose sum is σ = 158701062240. Its totient is φ = 13602947904.

The previous prime is 51011055169. The next prime is 51011055181. The reversal of 51011055180 is 8155011015.

51011055180 is a `hidden beast` number, since 5 + 101 + 1 + 0 + 551 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51011055181) 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, 47231919 + ... + 47232998.

It is an arithmetic number, because the mean of its divisors is an integer number (3306272130).

Almost surely, 2^51011055180 is an apocalyptic number.

It is an amenable number.

51011055180 is an abundant number, since it is smaller than the sum of its proper divisors (107690007060).

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

51011055180 is a wasteful number, since it uses less digits than its factorization.

51011055180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94464935 (or 94464927 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 27.

Adding to 51011055180 its reverse (8155011015), we get a palindrome (59166066195).

The spelling of 51011055180 in words is "fifty-one billion, eleven million, fifty-five thousand, one hundred eighty".