51943074220800 has 972 divisors, whose sum is σ = 216208560813336. Its totient is φ = 11862776217600.

The previous prime is 51943074220607. The next prime is 51943074220813. The reversal of 51943074220800 is 802247034915.

51943074220800 is a `hidden beast` number, since 5 + 1 + 9 + 430 + 7 + 4 + 2 + 208 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3688869760 + ... + 3688883840.

Almost surely, 2^{51943074220800} is an apocalyptic number.

51943074220800 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 51943074220800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108104280406668).

51943074220800 is an abundant number, since it is smaller than the sum of its proper divisors (164265486592536).

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

51943074220800 is a wasteful number, since it uses less digits than its factorization.

51943074220800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15434 (or 15405 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 51943074220800 in words is "fifty-one trillion, nine hundred forty-three billion, seventy-four million, two hundred twenty thousand, eight hundred".