551346400000 has 216 divisors, whose sum is σ = 1500663045168. Its totient is φ = 200486400000.

The previous prime is 551346399937. The next prime is 551346400037. The reversal of 551346400000 is 4643155.

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, 8768674 + ... + 8831326.

It is an arithmetic number, because the mean of its divisors is an integer number (6947514098).

Almost surely, 2^551346400000 is an apocalyptic number.

551346400000 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 551346400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (750331522584).

551346400000 is an abundant number, since it is smaller than the sum of its proper divisors (949316645168).

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

551346400000 is an frugal number, since it uses more digits than its factorization.

551346400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62705 (or 62671 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 551346400000 in words is "five hundred fifty-one billion, three hundred forty-six million, four hundred thousand".