551668518720 has 896 divisors, whose sum is σ = 2159447040000. Its totient is φ = 131472875520.

The previous prime is 551668518703. The next prime is 551668518769. The reversal of 551668518720 is 27815866155.

551668518720 is a `hidden beast` number, since 5 + 51 + 6 + 6 + 8 + 518 + 72 + 0 = 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 127 ways as a sum of consecutive naturals, for example, 2308236361 + ... + 2308236599.

Almost surely, 2^551668518720 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 551668518720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079723520000).

551668518720 is an abundant number, since it is smaller than the sum of its proper divisors (1607778521280).

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

551668518720 is a wasteful number, since it uses less digits than its factorization.

551668518720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 551668518720 in words is "five hundred fifty-one billion, six hundred sixty-eight million, five hundred eighteen thousand, seven hundred twenty".