51303311010 has 160 divisors (see below), whose sum is σ = 163092821760. Its totient is φ = 11322073728.

The previous prime is 51303310987. The next prime is 51303311021. The reversal of 51303311010 is 1011330315.

51303311010 is a `hidden beast` number, since 51 + 303 + 311 + 0 + 1 + 0 = 666.

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 79 ways as a sum of consecutive naturals, for example, 8427 + ... + 320433.

It is an arithmetic number, because the mean of its divisors is an integer number (1019330136).

Almost surely, 2^51303311010 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51303311010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81546410880).

51303311010 is an abundant number, since it is smaller than the sum of its proper divisors (111789510750).

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

51303311010 is a wasteful number, since it uses less digits than its factorization.

51303311010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312062 (or 312053 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

Adding to 51303311010 its reverse (1011330315), we get a palindrome (52314641325).

The spelling of 51303311010 in words is "fifty-one billion, three hundred three million, three hundred eleven thousand, ten".