551150660660 has 12 divisors (see below), whose sum is σ = 1157416387428. Its totient is φ = 220460264256.

The previous prime is 551150660653. The next prime is 551150660689. The reversal of 551150660660 is 66066051155.

It can be written as a sum of positive squares in 2 ways, for example, as 427226947876 + 123923712784 = 653626^2 + 352028^2 .

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, 13778766497 + ... + 13778766536.

It is an arithmetic number, because the mean of its divisors is an integer number (96451365619).

Almost surely, 2^551150660660 is an apocalyptic number.

It is an amenable number.

551150660660 is an abundant number, since it is smaller than the sum of its proper divisors (606265726768).

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

551150660660 is a wasteful number, since it uses less digits than its factorization.

551150660660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27557533042 (or 27557533040 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 551150660660 in words is "five hundred fifty-one billion, one hundred fifty million, six hundred sixty thousand, six hundred sixty".