51000155010 has 192 divisors, whose sum is σ = 159348470400. Its totient is φ = 11572896384.

The previous prime is 51000154969. The next prime is 51000155029. The reversal of 51000155010 is 1055100015.

51000155010 is a `hidden beast` number, since 5 + 100 + 0 + 1 + 550 + 10 = 666.

It is a super-2 number, since 2×51000155010² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1825104 + ... + 1852836.

It is an arithmetic number, because the mean of its divisors is an integer number (829939950).

Almost surely, 2^51000155010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51000155010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79674235200).

51000155010 is an abundant number, since it is smaller than the sum of its proper divisors (108348315390).

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

51000155010 is a wasteful number, since it uses less digits than its factorization.

51000155010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27902 (or 27889 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 51000155010 its reverse (1055100015), we get a palindrome (52055255025).

The spelling of 51000155010 in words is "fifty-one billion, one hundred fifty-five thousand, ten".