26401270123 has 4 divisors (see below), whose sum is σ = 26457804360. Its totient is φ = 26344735888.

The previous prime is 26401270073. The next prime is 26401270157. The reversal of 26401270123 is 32107210462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32107210462 = 2 ⋅16053605231.

It is a cyclic number.

It is not a de Polignac number, because 26401270123 - 2²¹ = 26399172971 is a prime.

It is a super-2 number, since 2×26401270123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26401270091 and 26401270100.

It is not an unprimeable number, because it can be changed into a prime (26401270193) 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, 28266418 + ... + 28267351.

It is an arithmetic number, because the mean of its divisors is an integer number (6614451090).

Almost surely, 2^26401270123 is an apocalyptic number.

26401270123 is a deficient number, since it is larger than the sum of its proper divisors (56534237).

26401270123 is an equidigital number, since it uses as much as digits as its factorization.

26401270123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56534236.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 26401270123 its reverse (32107210462), we get a palindrome (58508480585).

The spelling of 26401270123 in words is "twenty-six billion, four hundred one million, two hundred seventy thousand, one hundred twenty-three".