655650111808 has 28 divisors (see below), whose sum is σ = 1301095736640. Its totient is φ = 327814965632.

The previous prime is 655650111661. The next prime is 655650111847. The reversal of 655650111808 is 808111056556.

It is a super-2 number, since 2×655650111808² (a number of 24 digits) contains 22 as substring.

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, 2214585 + ... + 2493127.

It is an arithmetic number, because the mean of its divisors is an integer number (46467704880).

Almost surely, 2^655650111808 is an apocalyptic number.

It is an amenable number.

655650111808 is a deficient number, since it is larger than the sum of its proper divisors (645445624832).

655650111808 is a wasteful number, since it uses less digits than its factorization.

655650111808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315334 (or 315324 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 655650111808 in words is "six hundred fifty-five billion, six hundred fifty million, one hundred eleven thousand, eight hundred eight".