656600650500 has 96 divisors (see below), whose sum is σ = 1917439130880. Its totient is φ = 174597350400.

The previous prime is 656600650483. The next prime is 656600650621. The reversal of 656600650500 is 5056006656.

It is a happy number.

It is a super-2 number, since 2×656600650500² (a number of 24 digits) contains 22 as substring.

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, 90520 + ... + 1149519.

It is an arithmetic number, because the mean of its divisors is an integer number (19973324280).

Almost surely, 2^656600650500 is an apocalyptic number.

656600650500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 656600650500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958719565440).

656600650500 is an abundant number, since it is smaller than the sum of its proper divisors (1260838480380).

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

656600650500 is a wasteful number, since it uses less digits than its factorization.

656600650500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240414 (or 1240402 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 656600650500 in words is "six hundred fifty-six billion, six hundred million, six hundred fifty thousand, five hundred".