655241986605 has 16 divisors (see below), whose sum is σ = 1072768276800. Its totient is φ = 341335360128.

The previous prime is 655241986601. The next prime is 655241986699. The reversal of 655241986605 is 506689142556.

655241986605 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 655241986605 - 2² = 655241986601 is a prime.

It is a super-2 number, since 2×655241986605² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655241986601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507938880 + ... + 507940169.

It is an arithmetic number, because the mean of its divisors is an integer number (67048017300).

Almost surely, 2^655241986605 is an apocalyptic number.

It is an amenable number.

655241986605 is a deficient number, since it is larger than the sum of its proper divisors (417526290195).

655241986605 is a wasteful number, since it uses less digits than its factorization.

655241986605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015879100.

The product of its (nonzero) digits is 15552000, while the sum is 57.

The spelling of 655241986605 in words is "six hundred fifty-five billion, two hundred forty-one million, nine hundred eighty-six thousand, six hundred five".