51456759016 has 96 divisors (see below), whose sum is σ = 110335296960. Its totient is φ = 22441875456.

The previous prime is 51456759007. The next prime is 51456759017. The reversal of 51456759016 is 61095765415.

It is not an unprimeable number, because it can be changed into a prime (51456759017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2571000 + ... + 2590936.

It is an arithmetic number, because the mean of its divisors is an integer number (1149326010).

Almost surely, 2^51456759016 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 51456759016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55167648480).

51456759016 is an abundant number, since it is smaller than the sum of its proper divisors (58878537944).

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

51456759016 is a wasteful number, since it uses less digits than its factorization.

51456759016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20075 (or 20058 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 49.

The spelling of 51456759016 in words is "fifty-one billion, four hundred fifty-six million, seven hundred fifty-nine thousand, sixteen".