551531334510400 has 168 divisors, whose sum is σ = 1374334634632320. Its totient is φ = 217812962365440.

The previous prime is 551531334510341. The next prime is 551531334510419. The reversal of 551531334510400 is 4015433135155.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5872117839 + ... + 5872211761.

Almost surely, 2^{551531334510400} is an apocalyptic number.

551531334510400 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 551531334510400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687167317316160).

551531334510400 is an abundant number, since it is smaller than the sum of its proper divisors (822803300121920).

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

551531334510400 is a wasteful number, since it uses less digits than its factorization.

551531334510400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140481 (or 140466 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

Adding to 551531334510400 its reverse (4015433135155), we get a palindrome (555546767645555).

The spelling of 551531334510400 in words is "five hundred fifty-one trillion, five hundred thirty-one billion, three hundred thirty-four million, five hundred ten thousand, four hundred".