551315836660 has 48 divisors (see below), whose sum is σ = 1172744294400. Its totient is φ = 217690260480.

The previous prime is 551315836657. The next prime is 551315836667. The reversal of 551315836660 is 66638513155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551315836667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39901 + ... + 1050820.

It is an arithmetic number, because the mean of its divisors is an integer number (24432172800).

Almost surely, 2^551315836660 is an apocalyptic number.

It is an amenable number.

551315836660 is an abundant number, since it is smaller than the sum of its proper divisors (621428457740).

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

551315836660 is a wasteful number, since it uses less digits than its factorization.

551315836660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091056 (or 1091054 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 551315836660 in words is "five hundred fifty-one billion, three hundred fifteen million, eight hundred thirty-six thousand, six hundred sixty".