551825863680 has 880 divisors, whose sum is σ = 2219334211584. Its totient is φ = 116328038400.

The previous prime is 551825863651. The next prime is 551825863717. The reversal of 551825863680 is 86368528155.

It is a self number, because there is not a number n which added to its sum of digits gives 551825863680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 479431105 + ... + 479432255.

Almost surely, 2^551825863680 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 551825863680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1109667105792).

551825863680 is an abundant number, since it is smaller than the sum of its proper divisors (1667508347904).

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

551825863680 is a wasteful number, since it uses less digits than its factorization.

551825863680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 57.

The spelling of 551825863680 in words is "five hundred fifty-one billion, eight hundred twenty-five million, eight hundred sixty-three thousand, six hundred eighty".