51322064555424 has 192 divisors, whose sum is σ = 147165543826560. Its totient is φ = 15566168371200.

The previous prime is 51322064555347. The next prime is 51322064555479. The reversal of 51322064555424 is 42455546022315.

It is a super-2 number, since 2×51322064555424² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27716062 + ... + 29509730.

It is an arithmetic number, because the mean of its divisors is an integer number (766487207430).

Almost surely, 2^{51322064555424} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51322064555424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73582771913280).

51322064555424 is an abundant number, since it is smaller than the sum of its proper divisors (95843479271136).

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

51322064555424 is a wasteful number, since it uses less digits than its factorization.

51322064555424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794023 (or 1794015 counting only the distinct ones).

The product of its (nonzero) digits is 5760000, while the sum is 48.

The spelling of 51322064555424 in words is "fifty-one trillion, three hundred twenty-two billion, sixty-four million, five hundred fifty-five thousand, four hundred twenty-four".