51770321856000 has 1920 divisors, whose sum is σ = 216680466562560. Its totient is φ = 12209688576000.

The previous prime is 51770321855971. The next prime is 51770321856049. The reversal of 51770321856000 is 65812307715.

It is a happy number.

51770321856000 is a `hidden beast` number, since 5 + 1 + 7 + 7 + 0 + 32 + 1 + 8 + 5 + 600 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 6329659911 + ... + 6329668089.

It is an arithmetic number, because the mean of its divisors is an integer number (112854409668).

Almost surely, 2^{51770321856000} is an apocalyptic number.

51770321856000 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 51770321856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108340233281280).

51770321856000 is an abundant number, since it is smaller than the sum of its proper divisors (164910144706560).

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

51770321856000 is an equidigital number, since it uses as much as digits as its factorization.

51770321856000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275 (or 8237 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 51770321856000 in words is "fifty-one trillion, seven hundred seventy billion, three hundred twenty-one million, eight hundred fifty-six thousand".