51668500002 has 64 divisors (see below), whose sum is σ = 121969566720. Its totient is φ = 14283124416.

The previous prime is 51668500001. The next prime is 51668500033. The reversal of 51668500002 is 20000586615.

51668500002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51668500002³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51668500001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185293 + ... + 371039.

It is an arithmetic number, because the mean of its divisors is an integer number (1905774480).

Almost surely, 2^51668500002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51668500002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60984783360).

51668500002 is an abundant number, since it is smaller than the sum of its proper divisors (70301066718).

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

51668500002 is a wasteful number, since it uses less digits than its factorization.

51668500002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185975.

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 51668500002 in words is "fifty-one billion, six hundred sixty-eight million, five hundred thousand, two".