51445030000 has 200 divisors, whose sum is σ = 153299403488. Its totient is φ = 16281216000.

The previous prime is 51445029973. The next prime is 51445030009. The reversal of 51445030000 is 3054415.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×51445030000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51445030009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 881734 + ... + 938266.

Almost surely, 2^51445030000 is an apocalyptic number.

51445030000 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 51445030000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76649701744).

51445030000 is an abundant number, since it is smaller than the sum of its proper divisors (101854373488).

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

51445030000 is a wasteful number, since it uses less digits than its factorization.

51445030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56581 (or 56560 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 51445030000 its reverse (3054415), we get a palindrome (51448084415).

The spelling of 51445030000 in words is "fifty-one billion, four hundred forty-five million, thirty thousand".