2656264123 has 4 divisors (see below), whose sum is σ = 2706382368. Its totient is φ = 2606145880.

The previous prime is 2656264099. The next prime is 2656264129. The reversal of 2656264123 is 3214626562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2656264123 is a prime.

It is a super-2 number, since 2×2656264123² = 14111478182273918258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2656264129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25059043 + ... + 25059148.

It is an arithmetic number, because the mean of its divisors is an integer number (676595592).

Almost surely, 2^2656264123 is an apocalyptic number.

2656264123 is a deficient number, since it is larger than the sum of its proper divisors (50118245).

2656264123 is an equidigital number, since it uses as much as digits as its factorization.

2656264123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50118244.

The product of its digits is 103680, while the sum is 37.

The square root of 2656264123 is about 51538.9573332639. The cubic root of 2656264123 is about 1384.9170186656.

The spelling of 2656264123 in words is "two billion, six hundred fifty-six million, two hundred sixty-four thousand, one hundred twenty-three".