26420634123 has 16 divisors (see below), whose sum is σ = 37976606976. Its totient is φ = 16242014880.

The previous prime is 26420634109. The next prime is 26420634131. The reversal of 26420634123 is 32143602462.

It is not a de Polignac number, because 26420634123 - 2⁶ = 26420634059 is a prime.

It is a super-2 number, since 2×26420634123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26420630123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312573 + ... + 387998.

It is an arithmetic number, because the mean of its divisors is an integer number (2373537936).

Almost surely, 2^26420634123 is an apocalyptic number.

26420634123 is a deficient number, since it is larger than the sum of its proper divisors (11555972853).

26420634123 is a wasteful number, since it uses less digits than its factorization.

26420634123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701554.

The product of its (nonzero) digits is 41472, while the sum is 33.

The spelling of 26420634123 in words is "twenty-six billion, four hundred twenty million, six hundred thirty-four thousand, one hundred twenty-three".