51447360000 has 200 divisors, whose sum is σ = 171272100384. Its totient is φ = 13719040000.

The previous prime is 51447359989. The next prime is 51447360037. The reversal of 51447360000 is 6374415.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 51447360000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 933205 + ... + 986795.

Almost surely, 2^51447360000 is an apocalyptic number.

51447360000 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 51447360000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85636050192).

51447360000 is an abundant number, since it is smaller than the sum of its proper divisors (119824740384).

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

51447360000 is an frugal number, since it uses more digits than its factorization.

51447360000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53632 (or 53601 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The spelling of 51447360000 in words is "fifty-one billion, four hundred forty-seven million, three hundred sixty thousand".