551323623280 has 20 divisors (see below), whose sum is σ = 1281827424312. Its totient is φ = 220529449280.

The previous prime is 551323623259. The next prime is 551323623293. The reversal of 551323623280 is 82326323155.

It is a happy number.

551323623280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 3445772566 + ... + 3445772725.

Almost surely, 2^551323623280 is an apocalyptic number.

It is an amenable number.

551323623280 is an abundant number, since it is smaller than the sum of its proper divisors (730503801032).

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

551323623280 is a wasteful number, since it uses less digits than its factorization.

551323623280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891545304 (or 6891545298 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 551323623280 in words is "five hundred fifty-one billion, three hundred twenty-three million, six hundred twenty-three thousand, two hundred eighty".