655551030566 has 16 divisors (see below), whose sum is σ = 1023823408608. Its totient is φ = 314538676800.

The previous prime is 655551030551. The next prime is 655551030623. The reversal of 655551030566 is 665030155556.

It is a super-2 number, since 2×655551030566² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 655551030566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65523890 + ... + 65533893.

It is an arithmetic number, because the mean of its divisors is an integer number (63988963038).

Almost surely, 2^655551030566 is an apocalyptic number.

655551030566 is a deficient number, since it is larger than the sum of its proper divisors (368272378042).

655551030566 is a wasteful number, since it uses less digits than its factorization.

655551030566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131057887.

The product of its (nonzero) digits is 2025000, while the sum is 47.

The spelling of 655551030566 in words is "six hundred fifty-five billion, five hundred fifty-one million, thirty thousand, five hundred sixty-six".