51011010084 has 96 divisors (see below), whose sum is σ = 128336939136. Its totient is φ = 15712829440.

The previous prime is 51011010079. The next prime is 51011010097. The reversal of 51011010084 is 48001011015.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51011010084.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2456224 + ... + 2476904.

It is an arithmetic number, because the mean of its divisors is an integer number (1336843116).

Almost surely, 2^51011010084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51011010084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64168469568).

51011010084 is an abundant number, since it is smaller than the sum of its proper divisors (77325929052).

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

51011010084 is a wasteful number, since it uses less digits than its factorization.

51011010084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20925 (or 20923 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 51011010084 its reverse (48001011015), we get a palindrome (99012021099).

The spelling of 51011010084 in words is "fifty-one billion, eleven million, ten thousand, eighty-four".