26618431123 has 4 divisors (see below), whose sum is σ = 26881980048. Its totient is φ = 26354882200.

The previous prime is 26618431111. The next prime is 26618431163. The reversal of 26618431123 is 32113481662.

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

It is a cyclic number.

It is not a de Polignac number, because 26618431123 - 2⁹ = 26618430611 is a prime.

It is a super-2 number, since 2×26618431123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26618431163) 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, 131774311 + ... + 131774512.

It is an arithmetic number, because the mean of its divisors is an integer number (6720495012).

Almost surely, 2^26618431123 is an apocalyptic number.

26618431123 is a deficient number, since it is larger than the sum of its proper divisors (263548925).

26618431123 is a wasteful number, since it uses less digits than its factorization.

26618431123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263548924.

The product of its digits is 41472, while the sum is 37.

The spelling of 26618431123 in words is "twenty-six billion, six hundred eighteen million, four hundred thirty-one thousand, one hundred twenty-three".