656314022340 has 144 divisors (see below), whose sum is σ = 2045120732928. Its totient is φ = 170245608192.

The previous prime is 656314022327. The next prime is 656314022381. The reversal of 656314022340 is 43220413656.

656314022340 is a `hidden beast` number, since 6 + 563 + 1 + 40 + 22 + 34 + 0 = 666.

It is a super-2 number, since 2×656314022340² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 656314022295 and 656314022304.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35308689 + ... + 35327271.

It is an arithmetic number, because the mean of its divisors is an integer number (14202227312).

Almost surely, 2^656314022340 is an apocalyptic number.

656314022340 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 656314022340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022560366464).

656314022340 is an abundant number, since it is smaller than the sum of its proper divisors (1388806710588).

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

656314022340 is a wasteful number, since it uses less digits than its factorization.

656314022340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23938 (or 23933 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

Adding to 656314022340 its reverse (43220413656), we get a palindrome (699534435996).

The spelling of 656314022340 in words is "six hundred fifty-six billion, three hundred fourteen million, twenty-two thousand, three hundred forty".