51016013520 has 160 divisors (see below), whose sum is σ = 164783203200. Its totient is φ = 13040412672.

The previous prime is 51016013519. The next prime is 51016013569. The reversal of 51016013520 is 2531061015.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 941074 + ... + 993806.

It is an arithmetic number, because the mean of its divisors is an integer number (1029895020).

Almost surely, 2^51016013520 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 51016013520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82391601600).

51016013520 is an abundant number, since it is smaller than the sum of its proper divisors (113767189680).

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

51016013520 is a wasteful number, since it uses less digits than its factorization.

51016013520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52917 (or 52911 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

Adding to 51016013520 its reverse (2531061015), we get a palindrome (53547074535).

The spelling of 51016013520 in words is "fifty-one billion, sixteen million, thirteen thousand, five hundred twenty".