5656156123 has 2 divisors, whose sum is σ = 5656156124. Its totient is φ = 5656156122.

The previous prime is 5656156117. The next prime is 5656156217. The reversal of 5656156123 is 3216516565.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5656156123 is a prime.

It is a super-3 number, since 3×5656156123³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (5656156223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828078061 + 2828078062.

It is an arithmetic number, because the mean of its divisors is an integer number (2828078062).

Almost surely, 2^5656156123 is an apocalyptic number.

5656156123 is a deficient number, since it is larger than the sum of its proper divisors (1).

5656156123 is an equidigital number, since it uses as much as digits as its factorization.

5656156123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 5656156123 is about 75207.4206644531. The cubic root of 5656156123 is about 1781.7241345765.

The spelling of 5656156123 in words is "five billion, six hundred fifty-six million, one hundred fifty-six thousand, one hundred twenty-three".