551640365665624 has 16 divisors (see below), whose sum is σ = 1034339115568320. Its totient is φ = 275816601514080.

The previous prime is 551640365665561. The next prime is 551640365665657. The reversal of 551640365665624 is 426566563046155.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447010147 + ... + 448242514.

It is an arithmetic number, because the mean of its divisors is an integer number (64646194723020).

Almost surely, 2^{551640365665624} is an apocalyptic number.

It is an amenable number.

551640365665624 is a deficient number, since it is larger than the sum of its proper divisors (482698749902696).

551640365665624 is a wasteful number, since it uses less digits than its factorization.

551640365665624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895329690 (or 895329686 counting only the distinct ones).

The product of its (nonzero) digits is 466560000, while the sum is 64.

The spelling of 551640365665624 in words is "five hundred fifty-one trillion, six hundred forty billion, three hundred sixty-five million, six hundred sixty-five thousand, six hundred twenty-four".