551191623353280 has 7168 divisors, whose sum is σ = 2715338568499200. Its totient is φ = 101957259755520.

The previous prime is 551191623353219. The next prime is 551191623353291. The reversal of 551191623353280 is 82353326191155.

551191623353280 is a `hidden beast` number, since 5 + 5 + 1 + 1 + 9 + 1 + 6 + 2 + 3 + 353 + 280 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 1023 ways as a sum of consecutive naturals, for example, 2406950320206 + ... + 2406950320434.

It is an arithmetic number, because the mean of its divisors is an integer number (378813974400).

Almost surely, 2^{551191623353280} 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 551191623353280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357669284249600).

551191623353280 is an abundant number, since it is smaller than the sum of its proper divisors (2164146945145920).

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

551191623353280 is a wasteful number, since it uses less digits than its factorization.

551191623353280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 54.

The spelling of 551191623353280 in words is "five hundred fifty-one trillion, one hundred ninety-one billion, six hundred twenty-three million, three hundred fifty-three thousand, two hundred eighty".