656500665050 has 48 divisors (see below), whose sum is σ = 1230769237632. Its totient is φ = 260526412800.

The previous prime is 656500665047. The next prime is 656500665167. The reversal of 656500665050 is 50566005656.

It is a super-2 number, since 2×656500665050² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656500664992 and 656500665010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3448865 + ... + 3634235.

It is an arithmetic number, because the mean of its divisors is an integer number (25641025784).

Almost surely, 2^656500665050 is an apocalyptic number.

656500665050 is a deficient number, since it is larger than the sum of its proper divisors (574268572582).

656500665050 is a wasteful number, since it uses less digits than its factorization.

656500665050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185943 (or 185938 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 44.

The spelling of 656500665050 in words is "six hundred fifty-six billion, five hundred million, six hundred sixty-five thousand, fifty".