51323602000 has 120 divisors (see below), whose sum is σ = 136408597416. Its totient is φ = 18663040000.

The previous prime is 51323601947. The next prime is 51323602013. The reversal of 51323602000 is 20632315.

It can be written as a sum of positive squares in 4 ways, for example, as 15243359296 + 36080242704 = 123464^2 + 189948^2 .

It is a super-2 number, since 2×51323602000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135960 + ... + 348040.

Almost surely, 2^51323602000 is an apocalyptic number.

51323602000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51323602000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68204298708).

51323602000 is an abundant number, since it is smaller than the sum of its proper divisors (85084995416).

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

51323602000 is a wasteful number, since it uses less digits than its factorization.

51323602000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212126 (or 212099 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The spelling of 51323602000 in words is "fifty-one billion, three hundred twenty-three million, six hundred two thousand".