655540456266 has 64 divisors (see below), whose sum is σ = 1462541788800. Its totient is φ = 217646352000.

The previous prime is 655540456223. The next prime is 655540456303. The reversal of 655540456266 is 662654045556.

It is a happy number.

655540456266 is a `hidden beast` number, since 6 + 5 + 5 + 5 + 4 + 0 + 4 + 5 + 626 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44133741 + ... + 44148591.

It is an arithmetic number, because the mean of its divisors is an integer number (22852215450).

Almost surely, 2^655540456266 is an apocalyptic number.

655540456266 is an abundant number, since it is smaller than the sum of its proper divisors (807001332534).

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

655540456266 is a wasteful number, since it uses less digits than its factorization.

655540456266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052 (or 18046 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 54.

The spelling of 655540456266 in words is "six hundred fifty-five billion, five hundred forty million, four hundred fifty-six thousand, two hundred sixty-six".