51551115150 has 96 divisors (see below), whose sum is σ = 130433794560. Its totient is φ = 13469489280.

The previous prime is 51551115137. The next prime is 51551115151. The reversal of 51551115150 is 5151115515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51551115151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6538911 + ... + 6546789.

It is an arithmetic number, because the mean of its divisors is an integer number (1358685360).

Almost surely, 2^51551115150 is an apocalyptic number.

51551115150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51551115150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65216897280).

51551115150 is an abundant number, since it is smaller than the sum of its proper divisors (78882679410).

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

51551115150 is a wasteful number, since it uses less digits than its factorization.

51551115150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8770 (or 8765 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 30.

The spelling of 51551115150 in words is "fifty-one billion, five hundred fifty-one million, one hundred fifteen thousand, one hundred fifty".