51422324477400 has 384 divisors, whose sum is σ = 179579375976000. Its totient is φ = 13522386862080.

The previous prime is 51422324477371. The next prime is 51422324477413. The reversal of 51422324477400 is 477442322415.

51422324477400 is a `hidden beast` number, since 5 + 1 + 4 + 2 + 232 + 4 + 4 + 7 + 7 + 400 = 666.

It is a super-2 number, since 2×51422324477400² (a number of 28 digits) contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 3945541284 + ... + 3945554316.

Almost surely, 2^{51422324477400} is an apocalyptic number.

51422324477400 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 51422324477400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89789687988000).

51422324477400 is an abundant number, since it is smaller than the sum of its proper divisors (128157051498600).

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

51422324477400 is a wasteful number, since it uses less digits than its factorization.

51422324477400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23140 (or 23125 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 45.

Adding to 51422324477400 its reverse (477442322415), we get a palindrome (51899766799815).

The spelling of 51422324477400 in words is "fifty-one trillion, four hundred twenty-two billion, three hundred twenty-four million, four hundred seventy-seven thousand, four hundred".