656212325541 has 16 divisors (see below), whose sum is σ = 880351954944. Its totient is φ = 434774760624.

The previous prime is 656212325539. The next prime is 656212325543. The reversal of 656212325541 is 145523212656.

It is an interprime number because it is at equal distance from previous prime (656212325539) and next prime (656212325543).

It is not a de Polignac number, because 656212325541 - 2¹ = 656212325539 is a prime.

It is a super-2 number, since 2×656212325541² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 656212325493 and 656212325502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656212325543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2650536 + ... + 2887518.

It is an arithmetic number, because the mean of its divisors is an integer number (55021997184).

Almost surely, 2^656212325541 is an apocalyptic number.

It is an amenable number.

656212325541 is a deficient number, since it is larger than the sum of its proper divisors (224139629403).

656212325541 is a wasteful number, since it uses less digits than its factorization.

656212325541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242680.

The product of its digits is 432000, while the sum is 42.

The spelling of 656212325541 in words is "six hundred fifty-six billion, two hundred twelve million, three hundred twenty-five thousand, five hundred forty-one".